42020168 has 16 divisors (see below), whose sum is σ = 78924780. Its totient is φ = 20973568.

The previous prime is 42020131. The next prime is 42020171. The reversal of 42020168 is 86102024.

It can be written as a sum of positive squares in 2 ways, for example, as 42016324 + 3844 = 6482^2 + 62^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680 + ... + 9192.

Almost surely, 2^42020168 is an apocalyptic number.

It is an amenable number.

42020168 is a deficient number, since it is larger than the sum of its proper divisors (36904612).

42020168 is a wasteful number, since it uses less digits than its factorization.

42020168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9136 (or 9132 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 42020168 is about 6482.2965066402. The cubic root of 42020168 is about 347.6582940817.

It can be divided in two parts, 4202016 and 8, that added together give a palindrome (4202024).

The spelling of 42020168 in words is "forty-two million, twenty thousand, one hundred sixty-eight".