123569923 has 4 divisors (see below), whose sum is σ = 130838760. Its totient is φ = 116301088.

The previous prime is 123569903. The next prime is 123569951. The reversal of 123569923 is 329965321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329965321 = 7 ⋅47137903.

It is a cyclic number.

It is not a de Polignac number, because 123569923 - 2¹⁷ = 123438851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123569903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634393 + ... + 3634426.

It is an arithmetic number, because the mean of its divisors is an integer number (32709690).

Almost surely, 2^123569923 is an apocalyptic number.

123569923 is a deficient number, since it is larger than the sum of its proper divisors (7268837).

123569923 is an equidigital number, since it uses as much as digits as its factorization.

123569923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7268836.

The product of its digits is 87480, while the sum is 40.

The square root of 123569923 is about 11116.2009247764. The cubic root of 123569923 is about 498.0859125554.

The spelling of 123569923 in words is "one hundred twenty-three million, five hundred sixty-nine thousand, nine hundred twenty-three".