126425669 has 2 divisors, whose sum is σ = 126425670. Its totient is φ = 126425668.

The previous prime is 126425659. The next prime is 126425671. The reversal of 126425669 is 966524621.

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., 123321025 + 3104644 = 11105^2 + 1762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126425669 is a prime.

It is a super-2 number, since 2×126425669² = 31966899564195122, which contains 22 as substring.

Together with 126425671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126425609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63212834 + 63212835.

It is an arithmetic number, because the mean of its divisors is an integer number (63212835).

Almost surely, 2^126425669 is an apocalyptic number.

It is an amenable number.

126425669 is a deficient number, since it is larger than the sum of its proper divisors (1).

126425669 is an equidigital number, since it uses as much as digits as its factorization.

126425669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 126425669 is about 11243.9169776373. The cubic root of 126425669 is about 501.8937106650.

The spelling of 126425669 in words is "one hundred twenty-six million, four hundred twenty-five thousand, six hundred sixty-nine".