100401144 has 16 divisors (see below), whose sum is σ = 251002920. Its totient is φ = 33467040.

The previous prime is 100401139. The next prime is 100401163. The reversal of 100401144 is 441104001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091667 + ... + 2091714.

Almost surely, 2^100401144 is an apocalyptic number.

It is an amenable number.

100401144 is an abundant number, since it is smaller than the sum of its proper divisors (150601776).

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

100401144 is a wasteful number, since it uses less digits than its factorization.

100401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183390 (or 4183386 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 100401144 is about 10020.0371256797. The cubic root of 100401144 is about 464.7787038115.

Adding to 100401144 its reverse (441104001), we get a palindrome (541505145).

The spelling of 100401144 in words is "one hundred million, four hundred one thousand, one hundred forty-four".