123402263 has 2 divisors, whose sum is σ = 123402264. Its totient is φ = 123402262.

The previous prime is 123402241. The next prime is 123402271. The reversal of 123402263 is 362204321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123402263 - 2¹² = 123398167 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123402203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61701131 + 61701132.

It is an arithmetic number, because the mean of its divisors is an integer number (61701132).

Almost surely, 2^123402263 is an apocalyptic number.

123402263 is a deficient number, since it is larger than the sum of its proper divisors (1).

123402263 is an equidigital number, since it uses as much as digits as its factorization.

123402263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 123402263 is about 11108.6571195622. The cubic root of 123402263 is about 497.8605425004.

Adding to 123402263 its reverse (362204321), we get a palindrome (485606584).

The spelling of 123402263 in words is "one hundred twenty-three million, four hundred two thousand, two hundred sixty-three".