402061128 has 64 divisors (see below), whose sum is σ = 1209216000. Its totient is φ = 108827712.

The previous prime is 402061117. The next prime is 402061141. The reversal of 402061128 is 821160204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 402061098 and 402061107.

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 15 ways as a sum of consecutive naturals, for example, 59788 + ... + 66171.

It is an arithmetic number, because the mean of its divisors is an integer number (18894000).

Almost surely, 2^402061128 is an apocalyptic number.

It is an amenable number.

402061128 is an abundant number, since it is smaller than the sum of its proper divisors (807154872).

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

402061128 is a wasteful number, since it uses less digits than its factorization.

402061128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125994 (or 125990 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 402061128 is about 20051.4619915856. The cubic root of 402061128 is about 738.0696756361.

The spelling of 402061128 in words is "four hundred two million, sixty-one thousand, one hundred twenty-eight".