42213042 has 32 divisors (see below), whose sum is σ = 94785600. Its totient is φ = 13924224.

The previous prime is 42213029. The next prime is 42213077. The reversal of 42213042 is 24031224.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1209 + ... + 9267.

It is an arithmetic number, because the mean of its divisors is an integer number (2962050).

Almost surely, 2^42213042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42213042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47392800).

42213042 is an abundant number, since it is smaller than the sum of its proper divisors (52572558).

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

42213042 is a wasteful number, since it uses less digits than its factorization.

42213042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8167 (or 8161 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42213042 is about 6497.1564549424. The cubic root of 42213042 is about 348.1894034359.

Adding to 42213042 its reverse (24031224), we get a palindrome (66244266).

The spelling of 42213042 in words is "forty-two million, two hundred thirteen thousand, forty-two".