42242039 has 8 divisors (see below), whose sum is σ = 49399680. Its totient is φ = 35365176.

The previous prime is 42242033. The next prime is 42242047. The reversal of 42242039 is 93024224.

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

It is not a de Polignac number, because 42242039 - 2⁴ = 42242023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42241999 and 42242017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69869 + ... + 70470.

It is an arithmetic number, because the mean of its divisors is an integer number (6174960).

Almost surely, 2^42242039 is an apocalyptic number.

42242039 is a deficient number, since it is larger than the sum of its proper divisors (7157641).

42242039 is a wasteful number, since it uses less digits than its factorization.

42242039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140389.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42242039 is about 6499.3875865346. The cubic root of 42242039 is about 348.2691113233.

The spelling of 42242039 in words is "forty-two million, two hundred forty-two thousand, thirty-nine".