402031121016 has 64 divisors (see below), whose sum is σ = 1188269337600. Its totient is φ = 110905135488.

The previous prime is 402031120999. The next prime is 402031121047. The reversal of 402031121016 is 610121130204.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 402031120983 and 402031121001.

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, 41254480 + ... + 41264223.

It is an arithmetic number, because the mean of its divisors is an integer number (18566708400).

Almost surely, 2^402031121016 is an apocalyptic number.

It is an amenable number.

402031121016 is an abundant number, since it is smaller than the sum of its proper divisors (786238216584).

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

402031121016 is a wasteful number, since it uses less digits than its factorization.

402031121016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82518748 (or 82518744 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The spelling of 402031121016 in words is "four hundred two billion, thirty-one million, one hundred twenty-one thousand, sixteen".