104136215 has 4 divisors (see below), whose sum is σ = 124963464. Its totient is φ = 83308968.

The previous prime is 104136127. The next prime is 104136217. The reversal of 104136215 is 512631401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512631401 = 2693 ⋅190357.

It is a cyclic number.

It is not a de Polignac number, because 104136215 - 2⁸ = 104135959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104136217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10413617 + ... + 10413626.

It is an arithmetic number, because the mean of its divisors is an integer number (31240866).

Almost surely, 2^104136215 is an apocalyptic number.

104136215 is a deficient number, since it is larger than the sum of its proper divisors (20827249).

104136215 is an equidigital number, since it uses as much as digits as its factorization.

104136215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20827248.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 104136215 is about 10204.7153316494. The cubic root of 104136215 is about 470.4721601872.

Adding to 104136215 its reverse (512631401), we get a palindrome (616767616).

The spelling of 104136215 in words is "one hundred four million, one hundred thirty-six thousand, two hundred fifteen".