402347306021 has 8 divisors (see below), whose sum is σ = 403225766400. Its totient is φ = 401469006960.

The previous prime is 402347306003. The next prime is 402347306071. The reversal of 402347306021 is 120603743204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402347306021 - 2²² = 402343111717 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 (402347306071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5901395 + ... + 5969183.

It is an arithmetic number, because the mean of its divisors is an integer number (50403220800).

Almost surely, 2^402347306021 is an apocalyptic number.

It is an amenable number.

402347306021 is a deficient number, since it is larger than the sum of its proper divisors (878460379).

402347306021 is a wasteful number, since it uses less digits than its factorization.

402347306021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80659.

The product of its (nonzero) digits is 24192, while the sum is 32.

The spelling of 402347306021 in words is "four hundred two billion, three hundred forty-seven million, three hundred six thousand, twenty-one".