126179489 has 2 divisors, whose sum is σ = 126179490. Its totient is φ = 126179488.

The previous prime is 126179461. The next prime is 126179507. The reversal of 126179489 is 984971621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108472225 + 17707264 = 10415^2 + 4208^2 .

It is a cyclic number.

It is not a de Polignac number, because 126179489 - 2⁸ = 126179233 is a prime.

It is a super-2 number, since 2×126179489² = 31842526888602242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126179419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63089744 + 63089745.

It is an arithmetic number, because the mean of its divisors is an integer number (63089745).

Almost surely, 2^126179489 is an apocalyptic number.

It is an amenable number.

126179489 is a deficient number, since it is larger than the sum of its proper divisors (1).

126179489 is an equidigital number, since it uses as much as digits as its factorization.

126179489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 47.

The square root of 126179489 is about 11232.9643905783. The cubic root of 126179489 is about 501.5677312996.

The spelling of 126179489 in words is "one hundred twenty-six million, one hundred seventy-nine thousand, four hundred eighty-nine".