42004558 has 16 divisors (see below), whose sum is σ = 64615680. Its totient is φ = 20469816.

The previous prime is 42004553. The next prime is 42004561. The reversal of 42004558 is 85540024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25813 + ... + 27391.

It is an arithmetic number, because the mean of its divisors is an integer number (4038480).

Almost surely, 2^42004558 is an apocalyptic number.

42004558 is a deficient number, since it is larger than the sum of its proper divisors (22611122).

42004558 is a wasteful number, since it uses less digits than its factorization.

42004558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 42004558 is about 6481.0923462021. The cubic root of 42004558 is about 347.6152384222.

The spelling of 42004558 in words is "forty-two million, four thousand, five hundred fifty-eight".