12136457 has 2 divisors, whose sum is σ = 12136458. Its totient is φ = 12136456.

The previous prime is 12136441. The next prime is 12136483. The reversal of 12136457 is 75463121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7929856 + 4206601 = 2816^2 + 2051^2 .

It is an emirp because it is prime and its reverse (75463121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12136457 - 2⁴ = 12136441 is a prime.

It is not a weakly prime, because it can be changed into another prime (12132457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6068228 + 6068229.

It is an arithmetic number, because the mean of its divisors is an integer number (6068229).

Almost surely, 2^12136457 is an apocalyptic number.

It is an amenable number.

12136457 is a deficient number, since it is larger than the sum of its proper divisors (1).

12136457 is an equidigital number, since it uses as much as digits as its factorization.

12136457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 12136457 is about 3483.7418101805. The cubic root of 12136457 is about 229.8073812652.

Adding to 12136457 its reverse (75463121), we get a palindrome (87599578).

The spelling of 12136457 in words is "twelve million, one hundred thirty-six thousand, four hundred fifty-seven".