2021342345406 has 24 divisors (see below), whose sum is σ = 4387949050680. Its totient is φ = 672492478896.

The previous prime is 2021342345387. The next prime is 2021342345417. The reversal of 2021342345406 is 6045432431202.

2021342345406 is a `hidden beast` number, since 2 + 0 + 2 + 13 + 4 + 234 + 5 + 406 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107348901 + ... + 107367728.

It is an arithmetic number, because the mean of its divisors is an integer number (182831210445).

Almost surely, 2^{2021342345406} is an apocalyptic number.

2021342345406 is an abundant number, since it is smaller than the sum of its proper divisors (2366606705274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2021342345406 is a wasteful number, since it uses less digits than its factorization.

2021342345406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214717160 (or 214717157 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 2021342345406 its reverse (6045432431202), we get a palindrome (8066774776608).

The spelling of 2021342345406 in words is "two trillion, twenty-one billion, three hundred forty-two million, three hundred forty-five thousand, four hundred six".