42023225 has 6 divisors (see below), whose sum is σ = 52108830. Its totient is φ = 33618560.

The previous prime is 42023221. The next prime is 42023227. The reversal of 42023225 is 52232024.

It can be written as a sum of positive squares in 3 ways, for example, as 1776889 + 40246336 = 1333^2 + 6344^2 .

It is not a de Polignac number, because 42023225 - 2² = 42023221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42023197 and 42023206.

It is not an unprimeable number, because it can be changed into a prime (42023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840440 + ... + 840489.

It is an arithmetic number, because the mean of its divisors is an integer number (8684805).

Almost surely, 2^42023225 is an apocalyptic number.

It is an amenable number.

42023225 is a deficient number, since it is larger than the sum of its proper divisors (10085605).

42023225 is a wasteful number, since it uses less digits than its factorization.

42023225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680939 (or 1680934 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42023225 is about 6482.5322984155. The cubic root of 42023225 is about 347.6667246812. Note that the first 3 decimals are identical.

Adding to 42023225 its reverse (52232024), we get a palindrome (94255249).

The spelling of 42023225 in words is "forty-two million, twenty-three thousand, two hundred twenty-five".