126390049 has 2 divisors, whose sum is σ = 126390050. Its totient is φ = 126390048.

The previous prime is 126390031. The next prime is 126390133. The reversal of 126390049 is 940093621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111513600 + 14876449 = 10560^2 + 3857^2 .

It is a cyclic number.

It is not a de Polignac number, because 126390049 - 2²³ = 118001441 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126389996 and 126390023.

It is not a weakly prime, because it can be changed into another prime (126390349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63195024 + 63195025.

It is an arithmetic number, because the mean of its divisors is an integer number (63195025).

Almost surely, 2^126390049 is an apocalyptic number.

It is an amenable number.

126390049 is a deficient number, since it is larger than the sum of its proper divisors (1).

126390049 is an equidigital number, since it uses as much as digits as its factorization.

126390049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 126390049 is about 11242.3328984691. The cubic root of 126390049 is about 501.8465706252.

The spelling of 126390049 in words is "one hundred twenty-six million, three hundred ninety thousand, forty-nine".