100040045 has 32 divisors (see below), whose sum is σ = 143132928. Its totient is φ = 65691648.

The previous prime is 100040023. The next prime is 100040051. The reversal of 100040045 is 540040001.

It is a cyclic number.

It is not a de Polignac number, because 100040045 - 2⁶ = 100039981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86189 + ... + 87341.

It is an arithmetic number, because the mean of its divisors is an integer number (4472904).

Almost surely, 2^100040045 is an apocalyptic number.

It is an amenable number.

100040045 is a deficient number, since it is larger than the sum of its proper divisors (43092883).

100040045 is a wasteful number, since it uses less digits than its factorization.

100040045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 100040045 is about 10002.0020495899. The cubic root of 100040045 is about 464.2208325678.

Adding to 100040045 its reverse (540040001), we get a palindrome (640080046).

The spelling of 100040045 in words is "one hundred million, forty thousand, forty-five".