126941569 has 2 divisors, whose sum is σ = 126941570. Its totient is φ = 126941568.

The previous prime is 126941557. The next prime is 126941579. The reversal of 126941569 is 965149621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97911025 + 29030544 = 9895^2 + 5388^2 .

It is a cyclic number.

It is not a de Polignac number, because 126941569 - 2¹¹ = 126939521 is a prime.

It is a super-2 number, since 2×126941569² = 32228323880363522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126941579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63470784 + 63470785.

It is an arithmetic number, because the mean of its divisors is an integer number (63470785).

Almost surely, 2^126941569 is an apocalyptic number.

It is an amenable number.

126941569 is a deficient number, since it is larger than the sum of its proper divisors (1).

126941569 is an equidigital number, since it uses as much as digits as its factorization.

126941569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 126941569 is about 11266.8349149173. The cubic root of 126941569 is about 502.5754697997.

The spelling of 126941569 in words is "one hundred twenty-six million, nine hundred forty-one thousand, five hundred sixty-nine".