87580042 has 12 divisors (see below), whose sum is σ = 144398898. Its totient is φ = 39809000.

The previous prime is 87580037. The next prime is 87580043. The reversal of 87580042 is 24008578.

It can be written as a sum of positive squares in only one way, i.e., 85174441 + 2405601 = 9229^2 + 1551^2 .

It is not an unprimeable number, because it can be changed into a prime (87580043) 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 5 ways as a sum of consecutive naturals, for example, 180709 + ... + 181192.

Almost surely, 2^87580042 is an apocalyptic number.

87580042 is a deficient number, since it is larger than the sum of its proper divisors (56818856).

87580042 is a wasteful number, since it uses less digits than its factorization.

87580042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361925 (or 361914 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 87580042 is about 9358.4209138081. The cubic root of 87580042 is about 444.0873303045.

The spelling of 87580042 in words is "eighty-seven million, five hundred eighty thousand, forty-two".