12736145 has 8 divisors (see below), whose sum is σ = 16182504. Its totient is φ = 9589504.

The previous prime is 12736123. The next prime is 12736151. The reversal of 12736145 is 54163721.

It can be written as a sum of positive squares in 4 ways, for example, as 6390784 + 6345361 = 2528^2 + 2519^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12736145 - 2⁶ = 12736081 is a prime.

It is a super-2 number, since 2×12736145² = 324418778922050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74834 + ... + 75003.

It is an arithmetic number, because the mean of its divisors is an integer number (2022813).

Almost surely, 2^12736145 is an apocalyptic number.

It is an amenable number.

12736145 is a deficient number, since it is larger than the sum of its proper divisors (3446359).

12736145 is a wasteful number, since it uses less digits than its factorization.

12736145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149859.

The product of its digits is 5040, while the sum is 29.

The square root of 12736145 is about 3568.7735988712. The cubic root of 12736145 is about 233.5317846829.

Adding to 12736145 its reverse (54163721), we get a palindrome (66899866).

The spelling of 12736145 in words is "twelve million, seven hundred thirty-six thousand, one hundred forty-five".