12612137 has 8 divisors (see below), whose sum is σ = 12864456. Its totient is φ = 12362112.

The previous prime is 12612109. The next prime is 12612139. The reversal of 12612137 is 73121621.

It can be written as a sum of positive squares in 4 ways, for example, as 8185321 + 4426816 = 2861^2 + 2104^2 .

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

It is not a de Polignac number, because 12612137 - 2¹⁸ = 12349993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12612139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13943 + ... + 14819.

It is an arithmetic number, because the mean of its divisors is an integer number (1608057).

Almost surely, 2^12612137 is an apocalyptic number.

It is an amenable number.

12612137 is a deficient number, since it is larger than the sum of its proper divisors (252319).

12612137 is an equidigital number, since it uses as much as digits as its factorization.

12612137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147.

The product of its digits is 504, while the sum is 23.

The square root of 12612137 is about 3551.3570645600. The cubic root of 12612137 is about 232.7713685005.

Adding to 12612137 its reverse (73121621), we get a palindrome (85733758).

The spelling of 12612137 in words is "twelve million, six hundred twelve thousand, one hundred thirty-seven".