454139123 has 4 divisors (see below), whose sum is σ = 454190880. Its totient is φ = 454087368.

The previous prime is 454139111. The next prime is 454139149. The reversal of 454139123 is 321931454.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 454139123 - 2²⁸ = 185703667 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 454139123.

It is not an unprimeable number, because it can be changed into a prime (454139423) 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, 9083 + ... + 31476.

It is an arithmetic number, because the mean of its divisors is an integer number (113547720).

Almost surely, 2^454139123 is an apocalyptic number.

454139123 is a deficient number, since it is larger than the sum of its proper divisors (51757).

454139123 is a wasteful number, since it uses less digits than its factorization.

454139123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51756.

The product of its digits is 12960, while the sum is 32.

The square root of 454139123 is about 21310.5401855514. The cubic root of 454139123 is about 768.6517830941.

The spelling of 454139123 in words is "four hundred fifty-four million, one hundred thirty-nine thousand, one hundred twenty-three".