42020079 has 8 divisors (see below), whose sum is σ = 56174592. Its totient is φ = 27939480.

The previous prime is 42020063. The next prime is 42020087. The reversal of 42020079 is 97002024.

42020079 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 42020079 - 2⁴ = 42020063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020029) 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, 17137 + ... + 19434.

It is an arithmetic number, because the mean of its divisors is an integer number (7021824).

Almost surely, 2^42020079 is an apocalyptic number.

42020079 is a deficient number, since it is larger than the sum of its proper divisors (14154513).

42020079 is a wasteful number, since it uses less digits than its factorization.

42020079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36957.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 42020079 is about 6482.2896417855. The cubic root of 42020079 is about 347.6580486312.

The spelling of 42020079 in words is "forty-two million, twenty thousand, seventy-nine".