42440122 has 8 divisors (see below), whose sum is σ = 63788256. Its totient is φ = 21177372.

The previous prime is 42440113. The next prime is 42440149. The reversal of 42440122 is 22104424.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42440122.

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, 20088 + ... + 22099.

It is an arithmetic number, because the mean of its divisors is an integer number (7973532).

Almost surely, 2^42440122 is an apocalyptic number.

42440122 is a deficient number, since it is larger than the sum of its proper divisors (21348134).

42440122 is a wasteful number, since it uses less digits than its factorization.

42440122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42692.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 42440122 is about 6514.6083535390. The cubic root of 42440122 is about 348.8126349563.

Adding to 42440122 its reverse (22104424), we get a palindrome (64544546).

The spelling of 42440122 in words is "forty-two million, four hundred forty thousand, one hundred twenty-two".