402031444402 has 64 divisors (see below), whose sum is σ = 710960302080. Its totient is φ = 166956480000.

The previous prime is 402031444379. The next prime is 402031444457. The reversal of 402031444402 is 204444130204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20100627 + ... + 20120617.

It is an arithmetic number, because the mean of its divisors is an integer number (11108754720).

Almost surely, 2^402031444402 is an apocalyptic number.

402031444402 is a deficient number, since it is larger than the sum of its proper divisors (308928857678).

402031444402 is a wasteful number, since it uses less digits than its factorization.

402031444402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 402031444402 its reverse (204444130204), we get a palindrome (606475574606).

The spelling of 402031444402 in words is "four hundred two billion, thirty-one million, four hundred forty-four thousand, four hundred two".