123756423 has 16 divisors (see below), whose sum is σ = 190970880. Its totient is φ = 69821856.

The previous prime is 123756421. The next prime is 123756463. The reversal of 123756423 is 324657321.

It is not a de Polignac number, because 123756423 - 2¹ = 123756421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123756421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35640 + ... + 38957.

It is an arithmetic number, because the mean of its divisors is an integer number (11935680).

Almost surely, 2^123756423 is an apocalyptic number.

123756423 is a deficient number, since it is larger than the sum of its proper divisors (67214457).

123756423 is an equidigital number, since it uses as much as digits as its factorization.

123756423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74686.

The product of its digits is 30240, while the sum is 33.

The square root of 123756423 is about 11124.5864192787. The cubic root of 123756423 is about 498.3363681305.

The spelling of 123756423 in words is "one hundred twenty-three million, seven hundred fifty-six thousand, four hundred twenty-three".