57042540421 has 4 divisors (see below), whose sum is σ = 58009363200. Its totient is φ = 56075717644.

The previous prime is 57042540389. The next prime is 57042540433. The reversal of 57042540421 is 12404524075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57042540421 - 2⁵ = 57042540389 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 (57042540491) 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, 483411301 + ... + 483411418.

It is an arithmetic number, because the mean of its divisors is an integer number (14502340800).

Almost surely, 2^57042540421 is an apocalyptic number.

It is an amenable number.

57042540421 is a deficient number, since it is larger than the sum of its proper divisors (966822779).

57042540421 is an equidigital number, since it uses as much as digits as its factorization.

57042540421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966822778.

The product of its (nonzero) digits is 44800, while the sum is 34.

The spelling of 57042540421 in words is "fifty-seven billion, forty-two million, five hundred forty thousand, four hundred twenty-one".