42115222 has 8 divisors (see below), whose sum is σ = 66888936. Its totient is φ = 19818912.

The previous prime is 42115219. The next prime is 42115223. The reversal of 42115222 is 22251124.

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 42115222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115223) 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, 619308 + ... + 619375.

It is an arithmetic number, because the mean of its divisors is an integer number (8361117).

Almost surely, 2^42115222 is an apocalyptic number.

42115222 is a deficient number, since it is larger than the sum of its proper divisors (24773714).

42115222 is a wasteful number, since it uses less digits than its factorization.

42115222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238702.

The product of its digits is 320, while the sum is 19.

The square root of 42115222 is about 6489.6241801818. The cubic root of 42115222 is about 347.9202430953.

Adding to 42115222 its reverse (22251124), we get a palindrome (64366346).

The spelling of 42115222 in words is "forty-two million, one hundred fifteen thousand, two hundred twenty-two".