12940537 has 2 divisors, whose sum is σ = 12940538. Its totient is φ = 12940536.

The previous prime is 12940523. The next prime is 12940541. The reversal of 12940537 is 73504921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12845056 + 95481 = 3584^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 12940537 - 2¹⁹ = 12416249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12940499 and 12940508.

It is not a weakly prime, because it can be changed into another prime (12940507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6470268 + 6470269.

It is an arithmetic number, because the mean of its divisors is an integer number (6470269).

Almost surely, 2^12940537 is an apocalyptic number.

It is an amenable number.

12940537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12940537 is an equidigital number, since it uses as much as digits as its factorization.

12940537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 12940537 is about 3597.2957898955. The cubic root of 12940537 is about 234.7744145761.

The spelling of 12940537 in words is "twelve million, nine hundred forty thousand, five hundred thirty-seven".