42220239 has 8 divisors (see below), whose sum is σ = 56349360. Its totient is φ = 28118976.

The previous prime is 42220237. The next prime is 42220247. The reversal of 42220239 is 93202224.

42220239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42220239 - 2¹ = 42220237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42220237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3124 + ... + 9705.

It is an arithmetic number, because the mean of its divisors is an integer number (7043670).

Almost surely, 2^42220239 is an apocalyptic number.

42220239 is a deficient number, since it is larger than the sum of its proper divisors (14129121).

42220239 is a wasteful number, since it uses less digits than its factorization.

42220239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13929.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42220239 is about 6497.7102890172. The cubic root of 42220239 is about 348.2091901860.

The spelling of 42220239 in words is "forty-two million, two hundred twenty thousand, two hundred thirty-nine".