42004605 has 16 divisors (see below), whose sum is σ = 68638464. Its totient is φ = 21925440.

The previous prime is 42004579. The next prime is 42004639. The reversal of 42004605 is 50640024.

It is a happy number.

It is not a de Polignac number, because 42004605 - 2⁷ = 42004477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29086 + ... + 30495.

It is an arithmetic number, because the mean of its divisors is an integer number (4289904).

Almost surely, 2^42004605 is an apocalyptic number.

It is an amenable number.

42004605 is a deficient number, since it is larger than the sum of its proper divisors (26633859).

42004605 is a wasteful number, since it uses less digits than its factorization.

42004605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59636.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42004605 is about 6481.0959721331. The cubic root of 42004605 is about 347.6153680741.

Adding to 42004605 its reverse (50640024), we get a palindrome (92644629).

The spelling of 42004605 in words is "forty-two million, four thousand, six hundred five".