85042004 has 6 divisors (see below), whose sum is σ = 148823514. Its totient is φ = 42521000.

The previous prime is 85041997. The next prime is 85042019. The reversal of 85042004 is 40024058.

It can be written as a sum of positive squares in only one way, i.e., 80640400 + 4401604 = 8980^2 + 2098^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 10630247 + ... + 10630254.

It is an arithmetic number, because the mean of its divisors is an integer number (24803919).

Almost surely, 2^85042004 is an apocalyptic number.

It is an amenable number.

85042004 is a deficient number, since it is larger than the sum of its proper divisors (63781510).

85042004 is a wasteful number, since it uses less digits than its factorization.

85042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21260505 (or 21260503 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 85042004 is about 9221.8221626748. The cubic root of 85042004 is about 439.7553805571.

The spelling of 85042004 in words is "eighty-five million, forty-two thousand, four".