123452993 has 2 divisors, whose sum is σ = 123452994. Its totient is φ = 123452992.

The previous prime is 123452947. The next prime is 123453037. The reversal of 123452993 is 399254321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106667584 + 16785409 = 10328^2 + 4097^2 .

It is an emirp because it is prime and its reverse (399254321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123452993 - 2⁸ = 123452737 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123452093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61726496 + 61726497.

It is an arithmetic number, because the mean of its divisors is an integer number (61726497).

Almost surely, 2^123452993 is an apocalyptic number.

It is an amenable number.

123452993 is a deficient number, since it is larger than the sum of its proper divisors (1).

123452993 is an equidigital number, since it uses as much as digits as its factorization.

123452993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 123452993 is about 11110.9402392417. The cubic root of 123452993 is about 497.9287557421.

The spelling of 123452993 in words is "one hundred twenty-three million, four hundred fifty-two thousand, nine hundred ninety-three".