400625142 has 16 divisors (see below), whose sum is σ = 801883632. Its totient is φ = 133436160.

The previous prime is 400625123. The next prime is 400625153. The reversal of 400625142 is 241526004.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17959 + ... + 33522.

It is an arithmetic number, because the mean of its divisors is an integer number (50117727).

Almost surely, 2^400625142 is an apocalyptic number.

400625142 is an abundant number, since it is smaller than the sum of its proper divisors (401258490).

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

400625142 is a wasteful number, since it uses less digits than its factorization.

400625142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52783.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 400625142 is about 20015.6224484776. The cubic root of 400625142 is about 737.1899404090.

The spelling of 400625142 in words is "four hundred million, six hundred twenty-five thousand, one hundred forty-two".