402121100402 has 32 divisors (see below), whose sum is σ = 692892921600. Its totient is φ = 171453158208.

The previous prime is 402121100399. The next prime is 402121100453. The reversal of 402121100402 is 204001121204.

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, 4181168 + ... + 4276260.

It is an arithmetic number, because the mean of its divisors is an integer number (21652903800).

Almost surely, 2^402121100402 is an apocalyptic number.

402121100402 is a deficient number, since it is larger than the sum of its proper divisors (290771821198).

402121100402 is a wasteful number, since it uses less digits than its factorization.

402121100402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96650.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 402121100402 its reverse (204001121204), we get a palindrome (606122221606).

The spelling of 402121100402 in words is "four hundred two billion, one hundred twenty-one million, one hundred thousand, four hundred two".