100400132 has 24 divisors (see below), whose sum is σ = 201351360. Its totient is φ = 42910560.

The previous prime is 100400119. The next prime is 100400137. The reversal of 100400132 is 231004001.

It is a happy number.

It is a super-3 number, since 3×100400132³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (100400137) 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, 5882 + ... + 15342.

It is an arithmetic number, because the mean of its divisors is an integer number (8389640).

Almost surely, 2^100400132 is an apocalyptic number.

It is an amenable number.

100400132 is an abundant number, since it is smaller than the sum of its proper divisors (100951228).

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

100400132 is a wasteful number, since it uses less digits than its factorization.

100400132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9851 (or 9849 counting only the distinct ones).

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

The square root of 100400132 is about 10019.9866267376. The cubic root of 100400132 is about 464.7771422169. Note that the first 3 decimals are identical.

Adding to 100400132 its reverse (231004001), we get a palindrome (331404133).

The spelling of 100400132 in words is "one hundred million, four hundred thousand, one hundred thirty-two".