42220736 has 28 divisors (see below), whose sum is σ = 88193880. Its totient is φ = 19998720.

The previous prime is 42220733. The next prime is 42220757. The reversal of 42220736 is 63702224.

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, 16145 + ... + 18576.

Almost surely, 2^42220736 is an apocalyptic number.

It is an amenable number.

42220736 is an abundant number, since it is smaller than the sum of its proper divisors (45973144).

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

42220736 is a wasteful number, since it uses less digits than its factorization.

42220736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34752 (or 34742 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 42220736 is about 6497.7485331459. The cubic root of 42220736 is about 348.2105565077.

The spelling of 42220736 in words is "forty-two million, two hundred twenty thousand, seven hundred thirty-six".