42220732 has 12 divisors (see below), whose sum is σ = 77098896. Its totient is φ = 20192480.

The previous prime is 42220699. The next prime is 42220733. The reversal of 42220732 is 23702224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220733) 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, 229369 + ... + 229552.

It is an arithmetic number, because the mean of its divisors is an integer number (6424908).

Almost surely, 2^42220732 is an apocalyptic number.

It is an amenable number.

42220732 is a deficient number, since it is larger than the sum of its proper divisors (34878164).

42220732 is a wasteful number, since it uses less digits than its factorization.

42220732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458948 (or 458946 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42220732 is about 6497.7482253470. The cubic root of 42220732 is about 348.2105455112.

Adding to 42220732 its reverse (23702224), we get a palindrome (65922956).

The spelling of 42220732 in words is "forty-two million, two hundred twenty thousand, seven hundred thirty-two".