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142837860 = 223511216421
BaseRepresentation
bin10001000001110…
…00100001100100
3100221202220201010
420200320201210
5243031302420
622101302220
73353046624
oct1040704144
9327686633
10142837860
11736a0220
123ba04970
1323791c59
1414d82884
15c8174e0
hex8838864

142837860 has 48 divisors (see below), whose sum is σ = 436306752. Its totient is φ = 34627200.

The previous prime is 142837813. The next prime is 142837861. The reversal of 142837860 is 68738241.

It is not an unprimeable number, because it can be changed into a prime (142837861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107551 + ... + 108870.

It is an arithmetic number, because the mean of its divisors is an integer number (9089724).

Almost surely, 2142837860 is an apocalyptic number.

142837860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142837860 is an abundant number, since it is smaller than the sum of its proper divisors (293468892).

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

142837860 is a wasteful number, since it uses less digits than its factorization.

142837860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216444 (or 216442 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 142837860 is about 11951.4794063329. The cubic root of 142837860 is about 522.7344368933.

The spelling of 142837860 in words is "one hundred forty-two million, eight hundred thirty-seven thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 11 12 15 20 22 30 33 44 55 60 66 110 132 165 220 330 660 216421 432842 649263 865684 1082105 1298526 2164210 2380631 2597052 3246315 4328420 4761262 6492630 7141893 9522524 11903155 12985260 14283786 23806310 28567572 35709465 47612620 71418930 142837860