423550145 has 16 divisors (see below), whose sum is σ = 523895040. Its totient is φ = 328574400.

The previous prime is 423550093. The next prime is 423550163. The reversal of 423550145 is 541055324.

It is not a de Polignac number, because 423550145 - 2¹⁶ = 423484609 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11876 + ... + 31434.

It is an arithmetic number, because the mean of its divisors is an integer number (32743440).

Almost surely, 2^423550145 is an apocalyptic number.

It is an amenable number.

423550145 is a deficient number, since it is larger than the sum of its proper divisors (100344895).

423550145 is a wasteful number, since it uses less digits than its factorization.

423550145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19696.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 423550145 is about 20580.3339380098. Note that the first 3 decimals coincide. The cubic root of 423550145 is about 750.9913675284.

The spelling of 423550145 in words is "four hundred twenty-three million, five hundred fifty thousand, one hundred forty-five".