402123321204 has 48 divisors (see below), whose sum is σ = 1083797620416. Its totient is φ = 114687577600.

The previous prime is 402123321181. The next prime is 402123321233.

It is a happy number.

402123321204 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×402123321204² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 89597427 + ... + 89601914.

It is an arithmetic number, because the mean of its divisors is an integer number (22579117092).

Almost surely, 2^402123321204 is an apocalyptic number.

402123321204 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

402123321204 is an abundant number, since it is smaller than the sum of its proper divisors (681674299212).

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

402123321204 is a wasteful number, since it uses less digits than its factorization.

402123321204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179199376 (or 179199374 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 402123 and 321204, that added together give a palindrome (723327).

The spelling of 402123321204 in words is "four hundred two billion, one hundred twenty-three million, three hundred twenty-one thousand, two hundred four".