123466591 has 2 divisors, whose sum is σ = 123466592. Its totient is φ = 123466590.

The previous prime is 123466573. The next prime is 123466633. The reversal of 123466591 is 195664321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123466591 - 2¹⁷ = 123335519 is a prime.

It is a super-2 number, since 2×123466591² = 30487998186322562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123466591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123466531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61733295 + 61733296.

It is an arithmetic number, because the mean of its divisors is an integer number (61733296).

Almost surely, 2^123466591 is an apocalyptic number.

123466591 is a deficient number, since it is larger than the sum of its proper divisors (1).

123466591 is an equidigital number, since it uses as much as digits as its factorization.

123466591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 123466591 is about 11111.5521418027. The cubic root of 123466591 is about 497.9470368883.

The spelling of 123466591 in words is "one hundred twenty-three million, four hundred sixty-six thousand, five hundred ninety-one".