126238157 has 2 divisors, whose sum is σ = 126238158. Its totient is φ = 126238156.

The previous prime is 126238087. The next prime is 126238187. The reversal of 126238157 is 751832621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81468676 + 44769481 = 9026^2 + 6691^2 .

It is a cyclic number.

It is not a de Polignac number, because 126238157 - 2⁸ = 126237901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126238187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63119078 + 63119079.

It is an arithmetic number, because the mean of its divisors is an integer number (63119079).

Almost surely, 2^126238157 is an apocalyptic number.

It is an amenable number.

126238157 is a deficient number, since it is larger than the sum of its proper divisors (1).

126238157 is an equidigital number, since it uses as much as digits as its factorization.

126238157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 126238157 is about 11235.5755081794. The cubic root of 126238157 is about 501.6454550154.

The spelling of 126238157 in words is "one hundred twenty-six million, two hundred thirty-eight thousand, one hundred fifty-seven".