126955729 has 2 divisors, whose sum is σ = 126955730. Its totient is φ = 126955728.

The previous prime is 126955693. The next prime is 126955733. The reversal of 126955729 is 927559621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125955729 + 1000000 = 11223^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 126955729 - 2²¹ = 124858577 is a prime.

It is a super-2 number, since 2×126955729² = 32235514251842882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126952729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63477864 + 63477865.

It is an arithmetic number, because the mean of its divisors is an integer number (63477865).

Almost surely, 2^126955729 is an apocalyptic number.

It is an amenable number.

126955729 is a deficient number, since it is larger than the sum of its proper divisors (1).

126955729 is an equidigital number, since it uses as much as digits as its factorization.

126955729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 340200, while the sum is 46.

The square root of 126955729 is about 11267.4632903773. The cubic root of 126955729 is about 502.5941560979.

The spelling of 126955729 in words is "one hundred twenty-six million, nine hundred fifty-five thousand, seven hundred twenty-nine".