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142872157932 = 22374353337417
BaseRepresentation
bin1000010100001111011…
…0000001111011101100
3111122210000011121201220
42011003312001323230
54320100233023212
6145345022103340
713215335206410
oct2050366017354
9448700147656
10142872157932
1155656676989
122383371ab50
131061b93502a
146cb4c76d40
153ab2e6138c
hex2143d81eec

142872157932 has 96 divisors (see below), whose sum is σ = 389978383872. Its totient is φ = 39858448896.

The previous prime is 142872157913. The next prime is 142872157949. The reversal of 142872157932 is 239751278241.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19259088 + ... + 19266504.

It is an arithmetic number, because the mean of its divisors is an integer number (4062274832).

Almost surely, 2142872157932 is an apocalyptic number.

142872157932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142872157932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194989191936).

142872157932 is an abundant number, since it is smaller than the sum of its proper divisors (247106225940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142872157932 is a wasteful number, since it uses less digits than its factorization.

142872157932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12807 (or 12805 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The spelling of 142872157932 in words is "one hundred forty-two billion, eight hundred seventy-two million, one hundred fifty-seven thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 43 84 86 129 172 258 301 516 602 903 1204 1806 3612 5333 7417 10666 14834 15999 21332 22251 29668 31998 37331 44502 51919 63996 74662 89004 103838 111993 149324 155757 207676 223986 229319 311514 318931 447972 458638 623028 637862 687957 917276 956793 1275724 1375914 1605233 1913586 2232517 2751828 3210466 3827172 4465034 4815699 6420932 6697551 8930068 9631398 13395102 19262796 26790204 39554861 79109722 118664583 158219444 237329166 276884027 474658332 553768054 830652081 1107536108 1661304162 1700859023 3322608324 3401718046 5102577069 6803436092 10205154138 11906013161 20410308276 23812026322 35718039483 47624052644 71436078966 142872157932