400130132 has 12 divisors (see below), whose sum is σ = 700410900. Its totient is φ = 200012736.

The previous prime is 400130119. The next prime is 400130147. The reversal of 400130132 is 231031004.

It can be written as a sum of positive squares in 2 ways, for example, as 294328336 + 105801796 = 17156^2 + 10286^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7838 + ... + 29354.

It is an arithmetic number, because the mean of its divisors is an integer number (58367575).

Almost surely, 2^400130132 is an apocalyptic number.

It is an amenable number.

400130132 is a deficient number, since it is larger than the sum of its proper divisors (300280768).

400130132 is a wasteful number, since it uses less digits than its factorization.

400130132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26170 (or 26168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 400130132 is about 20003.2530354440. The cubic root of 400130132 is about 736.8861927960.

Adding to 400130132 its reverse (231031004), we get a palindrome (631161136).

The spelling of 400130132 in words is "four hundred million, one hundred thirty thousand, one hundred thirty-two".