12149757 has 12 divisors (see below), whose sum is σ = 18200000. Its totient is φ = 8099676.

The previous prime is 12149749. The next prime is 12149771. The reversal of 12149757 is 75794121.

It is a happy number.

It is not a de Polignac number, because 12149757 - 2³ = 12149749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149707) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24757 + ... + 25242.

Almost surely, 2^12149757 is an apocalyptic number.

It is an amenable number.

12149757 is a deficient number, since it is larger than the sum of its proper divisors (6050243).

12149757 is an frugal number, since it uses more digits than its factorization.

12149757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50014 (or 50002 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 12149757 is about 3485.6501545623. The cubic root of 12149757 is about 229.8912970890.

It can be divided in two parts, 12 and 149757, that added together give a square (149769 = 387²).

The spelling of 12149757 in words is "twelve million, one hundred forty-nine thousand, seven hundred fifty-seven".