402462306240421 has 4 divisors (see below), whose sum is σ = 459956921417632. Its totient is φ = 344967691063212.

The previous prime is 402462306240413. The next prime is 402462306240487. The reversal of 402462306240421 is 124042603264204.

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 not a de Polignac number, because 402462306240421 - 2³ = 402462306240413 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 (402462306240521) 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, 28747307588595 + ... + 28747307588608.

It is an arithmetic number, because the mean of its divisors is an integer number (114989230354408).

Almost surely, 2^{402462306240421} is an apocalyptic number.

It is an amenable number.

402462306240421 is a deficient number, since it is larger than the sum of its proper divisors (57494615177211).

402462306240421 is an equidigital number, since it uses as much as digits as its factorization.

402462306240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57494615177210.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 402462306240421 in words is "four hundred two trillion, four hundred sixty-two billion, three hundred six million, two hundred forty thousand, four hundred twenty-one".