12435450123 has 4 divisors (see below), whose sum is σ = 16580600168. Its totient is φ = 8290300080.

The previous prime is 12435450121. The next prime is 12435450161. The reversal of 12435450123 is 32105453421.

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

It is not a de Polignac number, because 12435450123 - 2¹ = 12435450121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12435450121) 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, 2072575018 + ... + 2072575023.

It is an arithmetic number, because the mean of its divisors is an integer number (4145150042).

Almost surely, 2^12435450123 is an apocalyptic number.

12435450123 is a deficient number, since it is larger than the sum of its proper divisors (4145150045).

12435450123 is an equidigital number, since it uses as much as digits as its factorization.

12435450123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145150044.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 12435450123 in words is "twelve billion, four hundred thirty-five million, four hundred fifty thousand, one hundred twenty-three".