12700138 has 8 divisors (see below), whose sum is σ = 20782080. Its totient is φ = 5772780.

The previous prime is 12700123. The next prime is 12700141. The reversal of 12700138 is 83100721.

12700138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12700138² = 322587010438088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 577279 = 12700138 / (1 + 2 + 7 + 0 + 0 + 1 + 3 + 8).

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, 288618 + ... + 288661.

It is an arithmetic number, because the mean of its divisors is an integer number (2597760).

Almost surely, 2^12700138 is an apocalyptic number.

12700138 is a deficient number, since it is larger than the sum of its proper divisors (8081942).

12700138 is a wasteful number, since it uses less digits than its factorization.

12700138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577292.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 12700138 is about 3563.7252980554. The cubic root of 12700138 is about 233.3115004515.

Adding to 12700138 its reverse (83100721), we get a palindrome (95800859).

The spelling of 12700138 in words is "twelve million, seven hundred thousand, one hundred thirty-eight".