123499 has 2 divisors, whose sum is σ = 123500. Its totient is φ = 123498.

The previous prime is 123493. The next prime is 123503. The reversal of 123499 is 994321.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (994321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123499 - 2³ = 123491 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (123491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61749 + 61750.

It is an arithmetic number, because the mean of its divisors is an integer number (61750).

2¹²³⁴⁹⁹ is an apocalyptic number.

123499 is a deficient number, since it is larger than the sum of its proper divisors (1).

123499 is an equidigital number, since it uses as much as digits as its factorization.

123499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 123499 is about 351.4242450372. The cubic root of 123499 is about 49.7990602125.

The spelling of 123499 in words is "one hundred twenty-three thousand, four hundred ninety-nine".