123629243 has 2 divisors, whose sum is σ = 123629244. Its totient is φ = 123629242.

The previous prime is 123629239. The next prime is 123629251. The reversal of 123629243 is 342926321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123629243 - 2² = 123629239 is a prime.

It is not a weakly prime, because it can be changed into another prime (123629273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61814621 + 61814622.

It is an arithmetic number, because the mean of its divisors is an integer number (61814622).

Almost surely, 2^123629243 is an apocalyptic number.

123629243 is a deficient number, since it is larger than the sum of its proper divisors (1).

123629243 is an equidigital number, since it uses as much as digits as its factorization.

123629243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 123629243 is about 11118.8687823897. The cubic root of 123629243 is about 498.1656021998.

The spelling of 123629243 in words is "one hundred twenty-three million, six hundred twenty-nine thousand, two hundred forty-three".