126157477 has 2 divisors, whose sum is σ = 126157478. Its totient is φ = 126157476.

The previous prime is 126157439. The next prime is 126157481. The reversal of 126157477 is 774751621.

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., 119049921 + 7107556 = 10911^2 + 2666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126157477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126157877) 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, 63078738 + 63078739.

It is an arithmetic number, because the mean of its divisors is an integer number (63078739).

Almost surely, 2^126157477 is an apocalyptic number.

It is an amenable number.

126157477 is a deficient number, since it is larger than the sum of its proper divisors (1).

126157477 is an equidigital number, since it uses as much as digits as its factorization.

126157477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 126157477 is about 11231.9845530521. The cubic root of 126157477 is about 501.5385634556.

The spelling of 126157477 in words is "one hundred twenty-six million, one hundred fifty-seven thousand, four hundred seventy-seven".