202120431402 has 16 divisors (see below), whose sum is σ = 404258225760. Its totient is φ = 67370583312.

The previous prime is 202120431377. The next prime is 202120431413. The reversal of 202120431402 is 204134021202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 569608 + ... + 853635.

It is an arithmetic number, because the mean of its divisors is an integer number (25266139110).

Almost surely, 2^202120431402 is an apocalyptic number.

202120431402 is an abundant number, since it is smaller than the sum of its proper divisors (202137794358).

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

202120431402 is a wasteful number, since it uses less digits than its factorization.

202120431402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446917.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 202120431402 its reverse (204134021202), we get a palindrome (406254452604).

The spelling of 202120431402 in words is "two hundred two billion, one hundred twenty million, four hundred thirty-one thousand, four hundred two".