123272489 has 2 divisors, whose sum is σ = 123272490. Its totient is φ = 123272488.

The previous prime is 123272483. The next prime is 123272503. The reversal of 123272489 is 984272321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105925264 + 17347225 = 10292^2 + 4165^2 .

It is an emirp because it is prime and its reverse (984272321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123272489 - 2²⁴ = 106495273 is a prime.

It is a super-2 number, since 2×123272489² = 30392213088510242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123272483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61636244 + 61636245.

It is an arithmetic number, because the mean of its divisors is an integer number (61636245).

Almost surely, 2^123272489 is an apocalyptic number.

It is an amenable number.

123272489 is a deficient number, since it is larger than the sum of its proper divisors (1).

123272489 is an equidigital number, since it uses as much as digits as its factorization.

123272489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 123272489 is about 11102.8144630089. The cubic root of 123272489 is about 497.6859589496.

The spelling of 123272489 in words is "one hundred twenty-three million, two hundred seventy-two thousand, four hundred eighty-nine".