12470138 has 4 divisors (see below), whose sum is σ = 18705210. Its totient is φ = 6235068.

The previous prime is 12470131. The next prime is 12470141. The reversal of 12470138 is 83107421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83107421 = 47 ⋅1768243.

It can be written as a sum of positive squares in only one way, i.e., 7166329 + 5303809 = 2677^2 + 2303^2 .

It is not an unprimeable number, because it can be changed into a prime (12470131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3117533 + ... + 3117536.

Almost surely, 2^12470138 is an apocalyptic number.

12470138 is a deficient number, since it is larger than the sum of its proper divisors (6235072).

12470138 is an equidigital number, since it uses as much as digits as its factorization.

12470138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235071.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 12470138 is about 3531.3082561566. The cubic root of 12470138 is about 231.8944848165.

Adding to 12470138 its reverse (83107421), we get a palindrome (95577559).

The spelling of 12470138 in words is "twelve million, four hundred seventy thousand, one hundred thirty-eight".