20137105 has 4 divisors (see below), whose sum is σ = 24164532. Its totient is φ = 16109680.

The previous prime is 20137099. The next prime is 20137111. The reversal of 20137105 is 50173102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20137099) and next prime (20137111).

It can be written as a sum of positive squares in 2 ways, for example, as 15397776 + 4739329 = 3924^2 + 2177^2 .

It is not a de Polignac number, because 20137105 - 2⁹ = 20136593 is a prime.

It is a Duffinian 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, 2013706 + ... + 2013715.

It is an arithmetic number, because the mean of its divisors is an integer number (6041133).

Almost surely, 2^20137105 is an apocalyptic number.

It is an amenable number.

20137105 is a deficient number, since it is larger than the sum of its proper divisors (4027427).

20137105 is an equidigital number, since it uses as much as digits as its factorization.

20137105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027426.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 20137105 is about 4487.4385789668. The cubic root of 20137105 is about 272.0606167166.

The spelling of 20137105 in words is "twenty million, one hundred thirty-seven thousand, one hundred five".