87117124 has 12 divisors (see below), whose sum is σ = 153804924. Its totient is φ = 43172864.

The previous prime is 87117113. The next prime is 87117133. The reversal of 87117124 is 42171178.

87117124 = T₃₈₁ + T₃₈₂ + ... + T₈₃₂.

It can be written as a sum of positive squares in 2 ways, for example, as 48553024 + 38564100 = 6968^2 + 6210^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95917 + ... + 96820.

It is an arithmetic number, because the mean of its divisors is an integer number (12817077).

Almost surely, 2^87117124 is an apocalyptic number.

It is an amenable number.

87117124 is a deficient number, since it is larger than the sum of its proper divisors (66687800).

87117124 is a wasteful number, since it uses less digits than its factorization.

87117124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192854 (or 192852 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 87117124 is about 9333.6554468225. The cubic root of 87117124 is about 443.3035166912.

The spelling of 87117124 in words is "eighty-seven million, one hundred seventeen thousand, one hundred twenty-four".