126279157 has 2 divisors, whose sum is σ = 126279158. Its totient is φ = 126279156.

The previous prime is 126279143. The next prime is 126279193. The reversal of 126279157 is 751972621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91126116 + 35153041 = 9546^2 + 5929^2 .

It is a cyclic number.

It is not a de Polignac number, because 126279157 - 2⁷ = 126279029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126279107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63139578 + 63139579.

It is an arithmetic number, because the mean of its divisors is an integer number (63139579).

Almost surely, 2^126279157 is an apocalyptic number.

It is an amenable number.

126279157 is a deficient number, since it is larger than the sum of its proper divisors (1).

126279157 is an equidigital number, since it uses as much as digits as its factorization.

126279157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 40.

The square root of 126279157 is about 11237.3999216901. The cubic root of 126279157 is about 501.6997577659.

The spelling of 126279157 in words is "one hundred twenty-six million, two hundred seventy-nine thousand, one hundred fifty-seven".