421152304457 has 4 divisors (see below), whose sum is σ = 439463274240. Its totient is φ = 402841334676.

The previous prime is 421152304429. The next prime is 421152304481. The reversal of 421152304457 is 754403251124.

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 421152304457 - 2³⁸ = 146274397513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421152304457.

It is not an unprimeable number, because it can be changed into a prime (421152304957) 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, 9155484857 + ... + 9155484902.

It is an arithmetic number, because the mean of its divisors is an integer number (109865818560).

Almost surely, 2^421152304457 is an apocalyptic number.

It is an amenable number.

421152304457 is a deficient number, since it is larger than the sum of its proper divisors (18310969783).

421152304457 is a wasteful number, since it uses less digits than its factorization.

421152304457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310969782.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 421152304457 in words is "four hundred twenty-one billion, one hundred fifty-two million, three hundred four thousand, four hundred fifty-seven".