42066620 has 24 divisors (see below), whose sum is σ = 89661264. Its totient is φ = 16574976.

The previous prime is 42066593. The next prime is 42066643. The reversal of 42066620 is 2666024.

It is a super-3 number, since 3×42066620³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42066620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14357 + ... + 17036.

It is an arithmetic number, because the mean of its divisors is an integer number (3735886).

Almost surely, 2^42066620 is an apocalyptic number.

It is an amenable number.

42066620 is an abundant number, since it is smaller than the sum of its proper divisors (47594644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42066620 is a wasteful number, since it uses less digits than its factorization.

42066620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31469 (or 31467 counting only the distinct ones).

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

The square root of 42066620 is about 6485.8785064168. The cubic root of 42066620 is about 347.7863554119.

The spelling of 42066620 in words is "forty-two million, sixty-six thousand, six hundred twenty".