450238123 has 4 divisors (see below), whose sum is σ = 450470848. Its totient is φ = 450005400.

The previous prime is 450238109. The next prime is 450238147. The reversal of 450238123 is 321832054.

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 450238123 - 2⁹ = 450237611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 450238091 and 450238100.

It is not an unprimeable number, because it can be changed into a prime (450238153) 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, 113436 + ... + 117337.

It is an arithmetic number, because the mean of its divisors is an integer number (112617712).

Almost surely, 2^450238123 is an apocalyptic number.

450238123 is a deficient number, since it is larger than the sum of its proper divisors (232725).

450238123 is a wasteful number, since it uses less digits than its factorization.

450238123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232724.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 450238123 is about 21218.8153062323. The cubic root of 450238123 is about 766.4445758928. Note that the first 3 decimals are identical.

The spelling of 450238123 in words is "four hundred fifty million, two hundred thirty-eight thousand, one hundred twenty-three".