42556004 has 6 divisors (see below), whose sum is σ = 74473014. Its totient is φ = 21278000.

The previous prime is 42556001. The next prime is 42556037. The reversal of 42556004 is 40065524.

It can be written as a sum of positive squares in only one way, i.e., 37847104 + 4708900 = 6152^2 + 2170^2 .

It is a super-2 number, since 2×42556004² = 3622026952896032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42556001) by changing a digit.

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, 5319497 + ... + 5319504.

It is an arithmetic number, because the mean of its divisors is an integer number (12412169).

Almost surely, 2^42556004 is an apocalyptic number.

It is an amenable number.

42556004 is a deficient number, since it is larger than the sum of its proper divisors (31917010).

42556004 is a wasteful number, since it uses less digits than its factorization.

42556004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10639005 (or 10639003 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 42556004 is about 6523.4963018308. The cubic root of 42556004 is about 349.1298220100.

The spelling of 42556004 in words is "forty-two million, five hundred fifty-six thousand, four".