42420524255 has 4 divisors (see below), whose sum is σ = 50904629112. Its totient is φ = 33936419400.

The previous prime is 42420524243. The next prime is 42420524257. The reversal of 42420524255 is 55242502424.

It is a happy number.

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

It is not a de Polignac number, because 42420524255 - 2⁴ = 42420524239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42420524257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4242052421 + ... + 4242052430.

It is an arithmetic number, because the mean of its divisors is an integer number (12726157278).

Almost surely, 2^42420524255 is an apocalyptic number.

42420524255 is a deficient number, since it is larger than the sum of its proper divisors (8484104857).

42420524255 is an equidigital number, since it uses as much as digits as its factorization.

42420524255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484104856.

The product of its (nonzero) digits is 128000, while the sum is 35.

The spelling of 42420524255 in words is "forty-two billion, four hundred twenty million, five hundred twenty-four thousand, two hundred fifty-five".