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142488880 = 2453315381
BaseRepresentation
bin10000111111000…
…11010100110000
3100221010011222221
420133203110300
5242434121010
622050010424
73350064322
oct1037432460
9327104887
10142488880
1173482006
123b876a14
132369c161
1414cd1612
15c798dda
hex87e3530

142488880 has 40 divisors (see below), whose sum is σ = 332349264. Its totient is φ = 56812800.

The previous prime is 142488869. The next prime is 142488889. The reversal of 142488880 is 88884241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (142488889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23790 + ... + 29170.

Almost surely, 2142488880 is an apocalyptic number.

142488880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142488880 is an abundant number, since it is smaller than the sum of its proper divisors (189860384).

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

142488880 is a wasteful number, since it uses less digits than its factorization.

142488880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5725 (or 5719 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 43.

The square root of 142488880 is about 11936.8706116804. The cubic root of 142488880 is about 522.3083765777.

The spelling of 142488880 in words is "one hundred forty-two million, four hundred eighty-eight thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 331 662 1324 1655 2648 3310 5296 5381 6620 10762 13240 21524 26480 26905 43048 53810 86096 107620 215240 430480 1781111 3562222 7124444 8905555 14248888 17811110 28497776 35622220 71244440 142488880