400742456 has 32 divisors (see below), whose sum is σ = 793689600. Its totient is φ = 189393120.

The previous prime is 400742453. The next prime is 400742473. The reversal of 400742456 is 654247004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400742453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8126 + ... + 29453.

It is an arithmetic number, because the mean of its divisors is an integer number (24802800).

Almost surely, 2^400742456 is an apocalyptic number.

It is an amenable number.

400742456 is a deficient number, since it is larger than the sum of its proper divisors (392947144).

400742456 is a wasteful number, since it uses less digits than its factorization.

400742456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37659 (or 37655 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 400742456 is about 20018.5527948451. The cubic root of 400742456 is about 737.2618898463.

The spelling of 400742456 in words is "four hundred million, seven hundred forty-two thousand, four hundred fifty-six".