123418369 has 2 divisors, whose sum is σ = 123418370. Its totient is φ = 123418368.

The previous prime is 123418367. The next prime is 123418417. The reversal of 123418369 is 963814321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123321025 + 97344 = 11105^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 123418369 - 2¹ = 123418367 is a prime.

It is a super-2 number, since 2×123418369² = 30464187613240322, which contains 22 as substring.

Together with 123418367, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (123418367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61709184 + 61709185.

It is an arithmetic number, because the mean of its divisors is an integer number (61709185).

Almost surely, 2^123418369 is an apocalyptic number.

It is an amenable number.

123418369 is a deficient number, since it is larger than the sum of its proper divisors (1).

123418369 is an equidigital number, since it uses as much as digits as its factorization.

123418369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 123418369 is about 11109.3820260175. The cubic root of 123418369 is about 497.8822011877.

The spelling of 123418369 in words is "one hundred twenty-three million, four hundred eighteen thousand, three hundred sixty-nine".