100442412 has 36 divisors (see below), whose sum is σ = 290167696. Its totient is φ = 28697760.

The previous prime is 100442371. The next prime is 100442413. The reversal of 100442412 is 214244001.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (100442413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199039 + ... + 199542.

Almost surely, 2^100442412 is an apocalyptic number.

100442412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

100442412 is an abundant number, since it is smaller than the sum of its proper divisors (189725284).

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

100442412 is a wasteful number, since it uses less digits than its factorization.

100442412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398598 (or 398593 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 100442412 is about 10022.0961879240. The cubic root of 100442412 is about 464.8423746006.

Adding to 100442412 its reverse (214244001), we get a palindrome (314686413).

The spelling of 100442412 in words is "one hundred million, four hundred forty-two thousand, four hundred twelve".