42212444 has 6 divisors (see below), whose sum is σ = 73871784. Its totient is φ = 21106220.

The previous prime is 42212441. The next prime is 42212459. The reversal of 42212444 is 44421224.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42212441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5276552 + ... + 5276559.

It is an arithmetic number, because the mean of its divisors is an integer number (12311964).

Almost surely, 2^42212444 is an apocalyptic number.

It is an amenable number.

42212444 is a deficient number, since it is larger than the sum of its proper divisors (31659340).

42212444 is a wasteful number, since it uses less digits than its factorization.

42212444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10553115 (or 10553113 counting only the distinct ones).

The product of its digits is 2048, while the sum is 23.

The square root of 42212444 is about 6497.1104346471. The cubic root of 42212444 is about 348.1877592501.

Adding to 42212444 its reverse (44421224), we get a palindrome (86633668).

The spelling of 42212444 in words is "forty-two million, two hundred twelve thousand, four hundred forty-four".