42229439 has 4 divisors (see below), whose sum is σ = 48262224. Its totient is φ = 36196656.

The previous prime is 42229417. The next prime is 42229441. The reversal of 42229439 is 93492224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42229439 - 2¹⁶ = 42163903 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42229399 and 42229408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42229459) 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, 3016382 + ... + 3016395.

It is an arithmetic number, because the mean of its divisors is an integer number (12065556).

Almost surely, 2^42229439 is an apocalyptic number.

42229439 is a deficient number, since it is larger than the sum of its proper divisors (6032785).

42229439 is an equidigital number, since it uses as much as digits as its factorization.

42229439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032784.

The product of its digits is 31104, while the sum is 35.

The square root of 42229439 is about 6498.4181921449. The cubic root of 42229439 is about 348.2344805204.

The spelling of 42229439 in words is "forty-two million, two hundred twenty-nine thousand, four hundred thirty-nine".