100012432 has 40 divisors (see below), whose sum is σ = 210873656. Its totient is φ = 45674496.

The previous prime is 100012421. The next prime is 100012457. The reversal of 100012432 is 234210001.

It can be written as a sum of positive squares in 4 ways, for example, as 12702096 + 87310336 = 3564^2 + 9344^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17698 + ... + 22654.

Almost surely, 2^100012432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100012432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105436828).

100012432 is an abundant number, since it is smaller than the sum of its proper divisors (110861224).

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

100012432 is a wasteful number, since it uses less digits than its factorization.

100012432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5075 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 100012432 is about 10000.6215806819. The cubic root of 100012432 is about 464.1781173084.

Adding to 100012432 its reverse (234210001), we get a palindrome (334222433).

The spelling of 100012432 in words is "one hundred million, twelve thousand, four hundred thirty-two".