400863142 has 8 divisors (see below), whose sum is σ = 607248432. Its totient is φ = 198447000.

The previous prime is 400863119. The next prime is 400863163. The reversal of 400863142 is 241368004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×400863142² = 321382517228224328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400863142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 992034 + ... + 992437.

It is an arithmetic number, because the mean of its divisors is an integer number (75906054).

Almost surely, 2^400863142 is an apocalyptic number.

400863142 is a deficient number, since it is larger than the sum of its proper divisors (206385290).

400863142 is a wasteful number, since it uses less digits than its factorization.

400863142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984574.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 400863142 is about 20021.5669216972. The cubic root of 400863142 is about 737.3358927016.

The spelling of 400863142 in words is "four hundred million, eight hundred sixty-three thousand, one hundred forty-two".