42020342 has 24 divisors (see below), whose sum is σ = 78963696. Its totient is φ = 16622928.

The previous prime is 42020339. The next prime is 42020347. The reversal of 42020342 is 24302024.

42020342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42020342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020347) 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 11 ways as a sum of consecutive naturals, for example, 15218 + ... + 17765.

It is an arithmetic number, because the mean of its divisors is an integer number (3290154).

Almost surely, 2^42020342 is an apocalyptic number.

42020342 is a deficient number, since it is larger than the sum of its proper divisors (36943354).

42020342 is a wasteful number, since it uses less digits than its factorization.

42020342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33012 (or 33005 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42020342 is about 6482.3099277958. The cubic root of 42020342 is about 347.6587739501.

Adding to 42020342 its reverse (24302024), we get a palindrome (66322366).

The spelling of 42020342 in words is "forty-two million, twenty thousand, three hundred forty-two".