400101024 has 24 divisors (see below), whose sum is σ = 1050265440. Its totient is φ = 133366976.

The previous prime is 400100971. The next prime is 400101047. The reversal of 400101024 is 420101004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 2083764 + ... + 2083955.

It is an arithmetic number, because the mean of its divisors is an integer number (43761060).

Almost surely, 2^400101024 is an apocalyptic number.

It is an amenable number.

400101024 is an abundant number, since it is smaller than the sum of its proper divisors (650164416).

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

400101024 is a wasteful number, since it uses less digits than its factorization.

400101024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167732 (or 4167724 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 400101024 is about 20002.5254405538. The cubic root of 400101024 is about 736.8683237731.

Adding to 400101024 its reverse (420101004), we get a palindrome (820202028).

The spelling of 400101024 in words is "four hundred million, one hundred one thousand, twenty-four".