126927257 has 2 divisors, whose sum is σ = 126927258. Its totient is φ = 126927256.

The previous prime is 126927223. The next prime is 126927259. The reversal of 126927257 is 752729621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94789696 + 32137561 = 9736^2 + 5669^2 .

It is a cyclic number.

It is not a de Polignac number, because 126927257 - 2¹² = 126923161 is a prime.

It is a super-2 number, since 2×126927257² = 32221057139088098, which contains 22 as substring.

Together with 126927259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126927259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63463628 + 63463629.

It is an arithmetic number, because the mean of its divisors is an integer number (63463629).

Almost surely, 2^126927257 is an apocalyptic number.

It is an amenable number.

126927257 is a deficient number, since it is larger than the sum of its proper divisors (1).

126927257 is an equidigital number, since it uses as much as digits as its factorization.

126927257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 126927257 is about 11266.1997585699. The cubic root of 126927257 is about 502.5565815019.

The spelling of 126927257 in words is "one hundred twenty-six million, nine hundred twenty-seven thousand, two hundred fifty-seven".