123049999 has 2 divisors, whose sum is σ = 123050000. Its totient is φ = 123049998.

The previous prime is 123049967. The next prime is 123050009. The reversal of 123049999 is 999940321.

It is a strong prime.

It is an emirp because it is prime and its reverse (999940321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123049999 - 2⁵ = 123049967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123049939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61524999 + 61525000.

It is an arithmetic number, because the mean of its divisors is an integer number (61525000).

Almost surely, 2^123049999 is an apocalyptic number.

123049999 is a deficient number, since it is larger than the sum of its proper divisors (1).

123049999 is an equidigital number, since it uses as much as digits as its factorization.

123049999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 123049999 is about 11092.7904063856. The cubic root of 123049999 is about 497.3863602466.

The spelling of 123049999 in words is "one hundred twenty-three million, forty-nine thousand, nine hundred ninety-nine".