125842669 has 2 divisors, whose sum is σ = 125842670. Its totient is φ = 125842668.

The previous prime is 125842663. The next prime is 125842679. The reversal of 125842669 is 966248521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76772644 + 49070025 = 8762^2 + 7005^2 .

It is a cyclic number.

It is not a de Polignac number, because 125842669 - 2¹³ = 125834477 is a prime.

It is a super-2 number, since 2×125842669² = 31672754682087122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125842663) 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, 62921334 + 62921335.

It is an arithmetic number, because the mean of its divisors is an integer number (62921335).

Almost surely, 2^125842669 is an apocalyptic number.

It is an amenable number.

125842669 is a deficient number, since it is larger than the sum of its proper divisors (1).

125842669 is an equidigital number, since it uses as much as digits as its factorization.

125842669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 125842669 is about 11217.9618915381. The cubic root of 125842669 is about 501.1210433120.

The spelling of 125842669 in words is "one hundred twenty-five million, eight hundred forty-two thousand, six hundred sixty-nine".