400100132 has 6 divisors (see below), whose sum is σ = 700175238. Its totient is φ = 200050064.

The previous prime is 400100033. The next prime is 400100171. The reversal of 400100132 is 231001004.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 283114276 + 116985856 = 16826^2 + 10816^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50012513 + ... + 50012520.

It is an arithmetic number, because the mean of its divisors is an integer number (116695873).

Almost surely, 2^400100132 is an apocalyptic number.

It is an amenable number.

400100132 is a deficient number, since it is larger than the sum of its proper divisors (300075106).

400100132 is a wasteful number, since it uses less digits than its factorization.

400100132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100025037 (or 100025035 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 400100132 is about 20002.5031433568. The cubic root of 400100132 is about 736.8677761722.

Adding to 400100132 its reverse (231001004), we get a palindrome (631101136).

The spelling of 400100132 in words is "four hundred million, one hundred thousand, one hundred thirty-two".