87275142 has 24 divisors (see below), whose sum is σ = 193709880. Its totient is φ = 28381920.

The previous prime is 87275141. The next prime is 87275143. The reversal of 87275142 is 24157278.

It is an interprime number because it is at equal distance from previous prime (87275141) and next prime (87275143).

It is a super-2 number, since 2×87275142² = 15233900822240328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87275097 and 87275106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87275141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58392 + ... + 59867.

It is an arithmetic number, because the mean of its divisors is an integer number (8071245).

Almost surely, 2^87275142 is an apocalyptic number.

87275142 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

87275142 is an abundant number, since it is smaller than the sum of its proper divisors (106434738).

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

87275142 is a wasteful number, since it uses less digits than its factorization.

87275142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118308 (or 118305 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 87275142 is about 9342.1165696003. The cubic root of 87275142 is about 443.5713845186.

The spelling of 87275142 in words is "eighty-seven million, two hundred seventy-five thousand, one hundred forty-two".