87317142 has 32 divisors (see below), whose sum is σ = 196660224. Its totient is φ = 25605600.

The previous prime is 87317137. The next prime is 87317143. The reversal of 87317142 is 24171378.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87317143) 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 15 ways as a sum of consecutive naturals, for example, 19293 + ... + 23384.

It is an arithmetic number, because the mean of its divisors is an integer number (6145632).

Almost surely, 2^87317142 is an apocalyptic number.

87317142 is an abundant number, since it is smaller than the sum of its proper divisors (109343082).

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

87317142 is a wasteful number, since it uses less digits than its factorization.

87317142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42724.

The product of its digits is 9408, while the sum is 33.

The square root of 87317142 is about 9344.3641838276. The cubic root of 87317142 is about 443.6425273818.

The spelling of 87317142 in words is "eighty-seven million, three hundred seventeen thousand, one hundred forty-two".