126154169 has 2 divisors, whose sum is σ = 126154170. Its totient is φ = 126154168.

The previous prime is 126154153. The next prime is 126154247. The reversal of 126154169 is 961451621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73736569 + 52417600 = 8587^2 + 7240^2 .

It is a cyclic number.

It is not a de Polignac number, because 126154169 - 2⁴ = 126154153 is a prime.

It is a super-2 number, since 2×126154169² = 31829748712161122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126154109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63077084 + 63077085.

It is an arithmetic number, because the mean of its divisors is an integer number (63077085).

Almost surely, 2^126154169 is an apocalyptic number.

It is an amenable number.

126154169 is a deficient number, since it is larger than the sum of its proper divisors (1).

126154169 is an equidigital number, since it uses as much as digits as its factorization.

126154169 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 126154169 is about 11231.8372940494. The cubic root of 126154169 is about 501.5341797702.

The spelling of 126154169 in words is "one hundred twenty-six million, one hundred fifty-four thousand, one hundred sixty-nine".