401442188 has 24 divisors (see below), whose sum is σ = 828785664. Its totient is φ = 166496400.

The previous prime is 401442187. The next prime is 401442211. The reversal of 401442188 is 881244104.

It is a super-2 number, since 2×401442188² = 322311660612454688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401442187) 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, 230378 + ... + 232113.

It is an arithmetic number, because the mean of its divisors is an integer number (34532736).

Almost surely, 2^401442188 is an apocalyptic number.

It is an amenable number.

401442188 is an abundant number, since it is smaller than the sum of its proper divisors (427343476).

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

401442188 is a wasteful number, since it uses less digits than its factorization.

401442188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462533 (or 462531 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 401442188 is about 20036.0222599198. The cubic root of 401442188 is about 737.6907486300.

The spelling of 401442188 in words is "four hundred one million, four hundred forty-two thousand, one hundred eighty-eight".