42443212 has 36 divisors (see below), whose sum is σ = 87476760. Its totient is φ = 17963904.

The previous prime is 42443197. The next prime is 42443239. The reversal of 42443212 is 21234424.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14964 + ... + 17572.

It is an arithmetic number, because the mean of its divisors is an integer number (2429910).

Almost surely, 2^42443212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42443212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43738380).

42443212 is an abundant number, since it is smaller than the sum of its proper divisors (45033548).

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

42443212 is a wasteful number, since it uses less digits than its factorization.

42443212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710 (or 2701 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 42443212 is about 6514.8455085290. The cubic root of 42443212 is about 348.8211002547.

Adding to 42443212 its reverse (21234424), we get a palindrome (63677636).

The spelling of 42443212 in words is "forty-two million, four hundred forty-three thousand, two hundred twelve".