12762157 has 4 divisors (see below), whose sum is σ = 12787740. Its totient is φ = 12736576.

The previous prime is 12762149. The next prime is 12762161. The reversal of 12762157 is 75126721.

12762157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75126721 = 1237 ⋅60733.

It can be written as a sum of positive squares in 2 ways, for example, as 7873636 + 4888521 = 2806^2 + 2211^2 .

It is a cyclic number.

It is not a de Polignac number, because 12762157 - 2³ = 12762149 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12762137) 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, 12028 + ... + 13045.

It is an arithmetic number, because the mean of its divisors is an integer number (3196935).

Almost surely, 2^12762157 is an apocalyptic number.

It is an amenable number.

12762157 is a deficient number, since it is larger than the sum of its proper divisors (25583).

12762157 is an equidigital number, since it uses as much as digits as its factorization.

12762157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25582.

The product of its digits is 5880, while the sum is 31.

The square root of 12762157 is about 3572.4161291764. The cubic root of 12762157 is about 233.6906631585.

Adding to 12762157 its reverse (75126721), we get a palindrome (87888878).

The spelling of 12762157 in words is "twelve million, seven hundred sixty-two thousand, one hundred fifty-seven".