126166489 has 8 divisors (see below), whose sum is σ = 128079360. Its totient is φ = 124264800.

The previous prime is 126166433. The next prime is 126166511. The reversal of 126166489 is 984661621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 126166489 - 2²⁵ = 92612057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126106489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21504 + ... + 26734.

It is an arithmetic number, because the mean of its divisors is an integer number (16009920).

Almost surely, 2^126166489 is an apocalyptic number.

It is an amenable number.

126166489 is a deficient number, since it is larger than the sum of its proper divisors (1912871).

126166489 is an equidigital number, since it uses as much as digits as its factorization.

126166489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591.

The product of its digits is 124416, while the sum is 43.

The square root of 126166489 is about 11232.3857216533. The cubic root of 126166489 is about 501.5505055616.

The spelling of 126166489 in words is "one hundred twenty-six million, one hundred sixty-six thousand, four hundred eighty-nine".