123365479 has 2 divisors, whose sum is σ = 123365480. Its totient is φ = 123365478.

The previous prime is 123365441. The next prime is 123365497. The reversal of 123365479 is 974563321.

It is a happy number.

Together with next prime (123365497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (974563321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123365479 - 2¹⁷ = 123234407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123369479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61682739 + 61682740.

It is an arithmetic number, because the mean of its divisors is an integer number (61682740).

Almost surely, 2^123365479 is an apocalyptic number.

123365479 is a deficient number, since it is larger than the sum of its proper divisors (1).

123365479 is an equidigital number, since it uses as much as digits as its factorization.

123365479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 123365479 is about 11107.0013504996. The cubic root of 123365479 is about 497.8110698201.

The spelling of 123365479 in words is "one hundred twenty-three million, three hundred sixty-five thousand, four hundred seventy-nine".