42126222 has 16 divisors (see below), whose sum is σ = 84332160. Its totient is φ = 14028792.

The previous prime is 42126169. The next prime is 42126223. The reversal of 42126222 is 22262124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42126223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5253 + ... + 10575.

It is an arithmetic number, because the mean of its divisors is an integer number (5270760).

Almost surely, 2^42126222 is an apocalyptic number.

42126222 is an abundant number, since it is smaller than the sum of its proper divisors (42205938).

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

42126222 is a wasteful number, since it uses less digits than its factorization.

42126222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647.

The product of its digits is 768, while the sum is 21.

The square root of 42126222 is about 6490.4716315534. The cubic root of 42126222 is about 347.9505313485.

Adding to 42126222 its reverse (22262124), we get a palindrome (64388346).

The spelling of 42126222 in words is "forty-two million, one hundred twenty-six thousand, two hundred twenty-two".