123965123 has 2 divisors, whose sum is σ = 123965124. Its totient is φ = 123965122.

The previous prime is 123965089. The next prime is 123965131. The reversal of 123965123 is 321569321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123965123 - 2¹² = 123961027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123965123.

It is not a weakly prime, because it can be changed into another prime (123965143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61982561 + 61982562.

It is an arithmetic number, because the mean of its divisors is an integer number (61982562).

Almost surely, 2^123965123 is an apocalyptic number.

123965123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123965123 is an equidigital number, since it uses as much as digits as its factorization.

123965123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 123965123 is about 11133.9625919975. The cubic root of 123965123 is about 498.6163384937.

The spelling of 123965123 in words is "one hundred twenty-three million, nine hundred sixty-five thousand, one hundred twenty-three".