400122304 has 14 divisors (see below), whose sum is σ = 793992824. Its totient is φ = 200061120.

The previous prime is 400122299. The next prime is 400122341. The reversal of 400122304 is 403221004.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3125892 + ... + 3126019.

Almost surely, 2^400122304 is an apocalyptic number.

It is an amenable number.

400122304 is a deficient number, since it is larger than the sum of its proper divisors (393870520).

400122304 is an equidigital number, since it uses as much as digits as its factorization.

400122304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251923 (or 6251913 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400122304 is about 20003.0573663128. The cubic root of 400122304 is about 736.8813873737.

Adding to 400122304 its reverse (403221004), we get a palindrome (803343308).

The spelling of 400122304 in words is "four hundred million, one hundred twenty-two thousand, three hundred four".