12157371 has 10 divisors (see below), whose sum is σ = 18161132. Its totient is φ = 8104860.

The previous prime is 12157367. The next prime is 12157391. The reversal of 12157371 is 17375121.

It is a happy number.

12157371 is a `hidden beast` number, since 1 + 21 + 573 + 71 = 666.

It is not a de Polignac number, because 12157371 - 2² = 12157367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12157391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74965 + ... + 75126.

Almost surely, 2^12157371 is an apocalyptic number.

12157371 is a deficient number, since it is larger than the sum of its proper divisors (6003761).

12157371 is an equidigital number, since it uses as much as digits as its factorization.

12157371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150103 (or 150094 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 12157371 is about 3486.7421757279. The cubic root of 12157371 is about 229.9393097589.

The spelling of 12157371 in words is "twelve million, one hundred fifty-seven thousand, three hundred seventy-one".