402123321203320 has 128 divisors (see below), whose sum is σ = 988303643712000. Its totient is φ = 146635523997696.

The previous prime is 402123321203311. The next prime is 402123321203321. The reversal of 402123321203320 is 23302123321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402123321203321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30224845 + ... + 41446204.

It is an arithmetic number, because the mean of its divisors is an integer number (7721122216500).

Almost surely, 2^{402123321203320} is an apocalyptic number.

402123321203320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402123321203320 is an abundant number, since it is smaller than the sum of its proper divisors (586180322508680).

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

402123321203320 is a wasteful number, since it uses less digits than its factorization.

402123321203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71671337 (or 71671333 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 402123321203320 its reverse (23302123321204), we get a palindrome (425425444524524).

The spelling of 402123321203320 in words is "four hundred two trillion, one hundred twenty-three billion, three hundred twenty-one million, two hundred three thousand, three hundred twenty".