126342857 has 2 divisors, whose sum is σ = 126342858. Its totient is φ = 126342856.

The previous prime is 126342829. The next prime is 126342859. The reversal of 126342857 is 758243621.

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., 68293696 + 58049161 = 8264^2 + 7619^2 .

It is a cyclic number.

It is not a de Polignac number, because 126342857 - 2¹⁶ = 126277321 is a prime.

Together with 126342859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126342857.

It is not a weakly prime, because it can be changed into another prime (126342859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63171428 + 63171429.

It is an arithmetic number, because the mean of its divisors is an integer number (63171429).

Almost surely, 2^126342857 is an apocalyptic number.

It is an amenable number.

126342857 is a deficient number, since it is larger than the sum of its proper divisors (1).

126342857 is an equidigital number, since it uses as much as digits as its factorization.

126342857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 126342857 is about 11240.2338498805. The cubic root of 126342857 is about 501.7841023856.

The spelling of 126342857 in words is "one hundred twenty-six million, three hundred forty-two thousand, eight hundred fifty-seven".