42225123 has 4 divisors (see below), whose sum is σ = 56300168. Its totient is φ = 28150080.

The previous prime is 42225107. The next prime is 42225133. The reversal of 42225123 is 32152224.

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

It is not a de Polignac number, because 42225123 - 2⁴ = 42225107 is a prime.

It is a super-2 number, since 2×42225123² = 3565922024730258, which contains 22 as substring.

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 42225123.

It is not an unprimeable number, because it can be changed into a prime (42225133) 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, 7037518 + ... + 7037523.

It is an arithmetic number, because the mean of its divisors is an integer number (14075042).

Almost surely, 2^42225123 is an apocalyptic number.

42225123 is a deficient number, since it is larger than the sum of its proper divisors (14075045).

42225123 is a wasteful number, since it uses less digits than its factorization.

42225123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14075044.

The product of its digits is 960, while the sum is 21.

The square root of 42225123 is about 6498.0861028460. The cubic root of 42225123 is about 348.2226165123. Note that the first 3 decimals are identical.

Adding to 42225123 its reverse (32152224), we get a palindrome (74377347).

The spelling of 42225123 in words is "forty-two million, two hundred twenty-five thousand, one hundred twenty-three".