100404045 has 24 divisors (see below), whose sum is σ = 198896256. Its totient is φ = 45898848.

The previous prime is 100404019. The next prime is 100404049. The reversal of 100404045 is 540404001.

It is not a de Polignac number, because 100404045 - 2⁵ = 100404013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100404049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159057 + ... + 159686.

It is an arithmetic number, because the mean of its divisors is an integer number (8287344).

Almost surely, 2^100404045 is an apocalyptic number.

100404045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100404045 is a deficient number, since it is larger than the sum of its proper divisors (98492211).

100404045 is a wasteful number, since it uses less digits than its factorization.

100404045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318761 (or 318758 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 100404045 is about 10020.1818845767. The cubic root of 100404045 is about 464.7831802214.

Adding to 100404045 its reverse (540404001), we get a palindrome (640808046).

The spelling of 100404045 in words is "one hundred million, four hundred four thousand, forty-five".