123654500423 has 4 divisors (see below), whose sum is σ = 124057284120. Its totient is φ = 123251716728.

The previous prime is 123654500371. The next prime is 123654500449. The reversal of 123654500423 is 324005456321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123654500423 - 2¹⁰ = 123654499399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123654505423) 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, 201391388 + ... + 201392001.

It is an arithmetic number, because the mean of its divisors is an integer number (31014321030).

Almost surely, 2^123654500423 is an apocalyptic number.

123654500423 is a deficient number, since it is larger than the sum of its proper divisors (402783697).

123654500423 is an equidigital number, since it uses as much as digits as its factorization.

123654500423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402783696.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 123654500423 its reverse (324005456321), we get a palindrome (447659956744).

The spelling of 123654500423 in words is "one hundred twenty-three billion, six hundred fifty-four million, five hundred thousand, four hundred twenty-three".