42225438 has 8 divisors (see below), whose sum is σ = 84450888. Its totient is φ = 14075144.

The previous prime is 42225413. The next prime is 42225457. The reversal of 42225438 is 83452224.

It is a sphenic number, since it is the product of 3 distinct primes.

42225438 is an admirable number.

It is a super-2 number, since 2×42225438² = 3565975228583688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3518781 + ... + 3518792.

It is an arithmetic number, because the mean of its divisors is an integer number (10556361).

Almost surely, 2^42225438 is an apocalyptic number.

42225438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42225438 is a wasteful number, since it uses less digits than its factorization.

42225438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037578.

The product of its digits is 15360, while the sum is 30.

The square root of 42225438 is about 6498.1103407068. The cubic root of 42225438 is about 348.2234824253.

The spelling of 42225438 in words is "forty-two million, two hundred twenty-five thousand, four hundred thirty-eight".