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142872260 = 2257143613
BaseRepresentation
bin10001000010000…
…00111011000100
3100221211122220012
420201000323010
5243033403020
622102125352
73353252126
oct1041007304
9327748805
10142872260
1173714053
123ba20858
13237a47cb
1414d91216
15c8227c5
hex8840ec4

142872260 has 12 divisors (see below), whose sum is σ = 300031788. Its totient is φ = 57148896.

The previous prime is 142872253. The next prime is 142872283. The reversal of 142872260 is 62278241.

It can be written as a sum of positive squares in 2 ways, for example, as 87011584 + 55860676 = 9328^2 + 7474^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3571787 + ... + 3571826.

It is an arithmetic number, because the mean of its divisors is an integer number (25002649).

Almost surely, 2142872260 is an apocalyptic number.

142872260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142872260 is an abundant number, since it is smaller than the sum of its proper divisors (157159528).

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

142872260 is a wasteful number, since it uses less digits than its factorization.

142872260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143622 (or 7143620 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 142872260 is about 11952.9184720720. The cubic root of 142872260 is about 522.7763973401.

The spelling of 142872260 in words is "one hundred forty-two million, eight hundred seventy-two thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 7143613 14287226 28574452 35718065 71436130 142872260