126289157 has 2 divisors, whose sum is σ = 126289158. Its totient is φ = 126289156.

The previous prime is 126289147. The next prime is 126289169. The reversal of 126289157 is 751982621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 47416996 = 8881^2 + 6886^2 .

It is a cyclic number.

It is not a de Polignac number, because 126289157 - 2⁸ = 126288901 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126289117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63144578 + 63144579.

It is an arithmetic number, because the mean of its divisors is an integer number (63144579).

Almost surely, 2^126289157 is an apocalyptic number.

It is an amenable number.

126289157 is a deficient number, since it is larger than the sum of its proper divisors (1).

126289157 is an equidigital number, since it uses as much as digits as its factorization.

126289157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 126289157 is about 11237.8448556652. The cubic root of 126289157 is about 501.7130005561.

The spelling of 126289157 in words is "one hundred twenty-six million, two hundred eighty-nine thousand, one hundred fifty-seven".