100402144 has 12 divisors (see below), whose sum is σ = 197666784. Its totient is φ = 50201056.

The previous prime is 100402139. The next prime is 100402151. The reversal of 100402144 is 441204001.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 as a sum of consecutive naturals, namely, 1568752 + ... + 1568815.

It is an arithmetic number, because the mean of its divisors is an integer number (16472232).

Almost surely, 2^100402144 is an apocalyptic number.

It is an amenable number.

100402144 is a deficient number, since it is larger than the sum of its proper divisors (97264640).

100402144 is an equidigital number, since it uses as much as digits as its factorization.

100402144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137577 (or 3137569 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 100402144 is about 10020.0870255702. The cubic root of 100402144 is about 464.7802468787.

Adding to 100402144 its reverse (441204001), we get a palindrome (541606145).

The spelling of 100402144 in words is "one hundred million, four hundred two thousand, one hundred forty-four".