401421012402 has 32 divisors (see below), whose sum is σ = 816243886080. Its totient is φ = 131586858000.

The previous prime is 401421012367. The next prime is 401421012413. The reversal of 401421012402 is 204210124104.

It is a super-2 number, since 2×401421012402² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568038 + ... + 1805985.

It is an arithmetic number, because the mean of its divisors is an integer number (25507621440).

Almost surely, 2^401421012402 is an apocalyptic number.

401421012402 is an abundant number, since it is smaller than the sum of its proper divisors (414822873678).

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

401421012402 is a wasteful number, since it uses less digits than its factorization.

401421012402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374358.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 401421012402 its reverse (204210124104), we get a palindrome (605631136506).

The spelling of 401421012402 in words is "four hundred one billion, four hundred twenty-one million, twelve thousand, four hundred two".