126613957 has 2 divisors, whose sum is σ = 126613958. Its totient is φ = 126613956.

The previous prime is 126613867. The next prime is 126613961. The reversal of 126613957 is 759316621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75933796 + 50680161 = 8714^2 + 7119^2 .

It is a cyclic number.

It is not a de Polignac number, because 126613957 - 2¹⁹ = 126089669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126613997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63306978 + 63306979.

It is an arithmetic number, because the mean of its divisors is an integer number (63306979).

Almost surely, 2^126613957 is an apocalyptic number.

It is an amenable number.

126613957 is a deficient number, since it is larger than the sum of its proper divisors (1).

126613957 is an equidigital number, since it uses as much as digits as its factorization.

126613957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 126613957 is about 11252.2867453687. The cubic root of 126613957 is about 502.1427468213.

The spelling of 126613957 in words is "one hundred twenty-six million, six hundred thirteen thousand, nine hundred fifty-seven".