123924551 has 2 divisors, whose sum is σ = 123924552. Its totient is φ = 123924550.

The previous prime is 123924487. The next prime is 123924557. The reversal of 123924551 is 155429321.

It is a strong prime.

It is an emirp because it is prime and its reverse (155429321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123924551 - 2⁶ = 123924487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123924557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61962275 + 61962276.

It is an arithmetic number, because the mean of its divisors is an integer number (61962276).

Almost surely, 2^123924551 is an apocalyptic number.

123924551 is a deficient number, since it is larger than the sum of its proper divisors (1).

123924551 is an equidigital number, since it uses as much as digits as its factorization.

123924551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 123924551 is about 11132.1404500662. The cubic root of 123924551 is about 498.5619359086.

The spelling of 123924551 in words is "one hundred twenty-three million, nine hundred twenty-four thousand, five hundred fifty-one".