400347142 has 12 divisors (see below), whose sum is σ = 650268540. Its totient is φ = 184775448.

The previous prime is 400347121. The next prime is 400347173. The reversal of 400347142 is 241743004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 591892 + ... + 592567.

It is an arithmetic number, because the mean of its divisors is an integer number (54189045).

Almost surely, 2^400347142 is an apocalyptic number.

400347142 is a deficient number, since it is larger than the sum of its proper divisors (249921398).

400347142 is a wasteful number, since it uses less digits than its factorization.

400347142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184487 (or 1184474 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 400347142 is about 20008.6766678859. The cubic root of 400347142 is about 737.0193851080.

The spelling of 400347142 in words is "four hundred million, three hundred forty-seven thousand, one hundred forty-two".