42504655 has 4 divisors (see below), whose sum is σ = 51005592. Its totient is φ = 34003720.

The previous prime is 42504593. The next prime is 42504677. The reversal of 42504655 is 55640524.

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

It is not a de Polignac number, because 42504655 - 2¹³ = 42496463 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4250461 + ... + 4250470.

It is an arithmetic number, because the mean of its divisors is an integer number (12751398).

Almost surely, 2^42504655 is an apocalyptic number.

42504655 is a deficient number, since it is larger than the sum of its proper divisors (8500937).

42504655 is an equidigital number, since it uses as much as digits as its factorization.

42504655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8500936.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 42504655 is about 6519.5594176294. The cubic root of 42504655 is about 348.9893429476.

The spelling of 42504655 in words is "forty-two million, five hundred four thousand, six hundred fifty-five".