123682399 has 2 divisors, whose sum is σ = 123682400. Its totient is φ = 123682398.

The previous prime is 123682397. The next prime is 123682411. The reversal of 123682399 is 993286321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123682399 - 2¹ = 123682397 is a prime.

Together with 123682397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123682397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61841199 + 61841200.

It is an arithmetic number, because the mean of its divisors is an integer number (61841200).

Almost surely, 2^123682399 is an apocalyptic number.

123682399 is a deficient number, since it is larger than the sum of its proper divisors (1).

123682399 is an equidigital number, since it uses as much as digits as its factorization.

123682399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 43.

The square root of 123682399 is about 11121.2588765841. The cubic root of 123682399 is about 498.2369895615.

The spelling of 123682399 in words is "one hundred twenty-three million, six hundred eighty-two thousand, three hundred ninety-nine".