126132557 has 2 divisors, whose sum is σ = 126132558. Its totient is φ = 126132556.

The previous prime is 126132551. The next prime is 126132569. The reversal of 126132557 is 755231621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100922116 + 25210441 = 10046^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 126132557 - 2²⁴ = 109355341 is a prime.

It is a Chen prime.

It is equal to p_7170944 and since 126132557 and 7170944 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126132551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63066278 + 63066279.

It is an arithmetic number, because the mean of its divisors is an integer number (63066279).

Almost surely, 2^126132557 is an apocalyptic number.

It is an amenable number.

126132557 is a deficient number, since it is larger than the sum of its proper divisors (1).

126132557 is an equidigital number, since it uses as much as digits as its factorization.

126132557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 32.

The square root of 126132557 is about 11230.8751662549. The cubic root of 126132557 is about 501.5055381597.

The spelling of 126132557 in words is "one hundred twenty-six million, one hundred thirty-two thousand, five hundred fifty-seven".