123492559 has 2 divisors, whose sum is σ = 123492560. Its totient is φ = 123492558.

The previous prime is 123492557. The next prime is 123492583. The reversal of 123492559 is 955294321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123492559 - 2¹ = 123492557 is a prime.

Together with 123492557, 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 (123492553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61746279 + 61746280.

It is an arithmetic number, because the mean of its divisors is an integer number (61746280).

Almost surely, 2^123492559 is an apocalyptic number.

123492559 is a deficient number, since it is larger than the sum of its proper divisors (1).

123492559 is an equidigital number, since it uses as much as digits as its factorization.

123492559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 123492559 is about 11112.7205939860. The cubic root of 123492559 is about 497.9819445291.

The spelling of 123492559 in words is "one hundred twenty-three million, four hundred ninety-two thousand, five hundred fifty-nine".