400254342 has 32 divisors (see below), whose sum is σ = 843696000. Its totient is φ = 126237888.

The previous prime is 400254331. The next prime is 400254347. The reversal of 400254342 is 243452004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400254347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117913 + ... + 121259.

It is an arithmetic number, because the mean of its divisors is an integer number (26365500).

Almost surely, 2^400254342 is an apocalyptic number.

400254342 is an abundant number, since it is smaller than the sum of its proper divisors (443441658).

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

400254342 is a wasteful number, since it uses less digits than its factorization.

400254342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 400254342 is about 20006.3575395423. The cubic root of 400254342 is about 736.9624339631.

The spelling of 400254342 in words is "four hundred million, two hundred fifty-four thousand, three hundred forty-two".