123402023 has 2 divisors, whose sum is σ = 123402024. Its totient is φ = 123402022.

The previous prime is 123402011. The next prime is 123402043. The reversal of 123402023 is 320204321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123402023 - 2⁸ = 123401767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123401992 and 123402010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123402043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61701011 + 61701012.

It is an arithmetic number, because the mean of its divisors is an integer number (61701012).

Almost surely, 2^123402023 is an apocalyptic number.

123402023 is a deficient number, since it is larger than the sum of its proper divisors (1).

123402023 is an equidigital number, since it uses as much as digits as its factorization.

123402023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 123402023 is about 11108.6463171711. The cubic root of 123402023 is about 497.8602197440.

Adding to 123402023 its reverse (320204321), we get a palindrome (443606344).

The spelling of 123402023 in words is "one hundred twenty-three million, four hundred two thousand, twenty-three".