12940757 has 8 divisors (see below), whose sum is σ = 14175000. Its totient is φ = 11759104.

The previous prime is 12940751. The next prime is 12940769. The reversal of 12940757 is 75704921.

It can be written as a sum of positive squares in 4 ways, for example, as 5317636 + 7623121 = 2306^2 + 2761^2 .

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

It is not a de Polignac number, because 12940757 - 2¹⁶ = 12875221 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 (12940751) 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, 12632 + ... + 13617.

It is an arithmetic number, because the mean of its divisors is an integer number (1771875).

Almost surely, 2^12940757 is an apocalyptic number.

12940757 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12940757 is a deficient number, since it is larger than the sum of its proper divisors (1234243).

12940757 is a wasteful number, since it uses less digits than its factorization.

12940757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26295.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 12940757 is about 3597.3263682908. The cubic root of 12940757 is about 234.7757450226.

The spelling of 12940757 in words is "twelve million, nine hundred forty thousand, seven hundred fifty-seven".