126415169 has 2 divisors, whose sum is σ = 126415170. Its totient is φ = 126415168.

The previous prime is 126415127. The next prime is 126415181. The reversal of 126415169 is 961514621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94322944 + 32092225 = 9712^2 + 5665^2 .

It is an emirp because it is prime and its reverse (961514621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126415169 - 2¹² = 126411073 is a prime.

It is a super-2 number, since 2×126415169² = 31961589906597122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (126415109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63207584 + 63207585.

It is an arithmetic number, because the mean of its divisors is an integer number (63207585).

Almost surely, 2^126415169 is an apocalyptic number.

It is an amenable number.

126415169 is a deficient number, since it is larger than the sum of its proper divisors (1).

126415169 is an equidigital number, since it uses as much as digits as its factorization.

126415169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 35.

The square root of 126415169 is about 11243.4500488062. The cubic root of 126415169 is about 501.8798157287.

The spelling of 126415169 in words is "one hundred twenty-six million, four hundred fifteen thousand, one hundred sixty-nine".