12137843 has 2 divisors, whose sum is σ = 12137844. Its totient is φ = 12137842.

The previous prime is 12137831. The next prime is 12137849. The reversal of 12137843 is 34873121.

It is a strong prime.

It is an emirp because it is prime and its reverse (34873121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12137843 - 2¹² = 12133747 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12137849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6068921 + 6068922.

It is an arithmetic number, because the mean of its divisors is an integer number (6068922).

Almost surely, 2^12137843 is an apocalyptic number.

12137843 is a deficient number, since it is larger than the sum of its proper divisors (1).

12137843 is an equidigital number, since it uses as much as digits as its factorization.

12137843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 29.

The square root of 12137843 is about 3483.9407285429. The cubic root of 12137843 is about 229.8161290380.

The spelling of 12137843 in words is "twelve million, one hundred thirty-seven thousand, eight hundred forty-three".