87005042 has 4 divisors (see below), whose sum is σ = 130507566. Its totient is φ = 43502520.

The previous prime is 87005041. The next prime is 87005053. The reversal of 87005042 is 24050078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55071241 + 31933801 = 7421^2 + 5651^2 .

It is not an unprimeable number, because it can be changed into a prime (87005041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21751259 + ... + 21751262.

Almost surely, 2^87005042 is an apocalyptic number.

87005042 is a deficient number, since it is larger than the sum of its proper divisors (43502524).

87005042 is a wasteful number, since it uses less digits than its factorization.

87005042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43502523.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 87005042 is about 9327.6493287430. The cubic root of 87005042 is about 443.1133219052.

The spelling of 87005042 in words is "eighty-seven million, five thousand, forty-two".