42066442 has 16 divisors (see below), whose sum is σ = 71057664. Its totient is φ = 18504000.

The previous prime is 42066433. The next prime is 42066461. The reversal of 42066442 is 24466024.

It is a self number, because there is not a number n which added to its sum of digits gives 42066442.

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, 30159 + ... + 31522.

It is an arithmetic number, because the mean of its divisors is an integer number (4441104).

Almost surely, 2^42066442 is an apocalyptic number.

42066442 is a deficient number, since it is larger than the sum of its proper divisors (28991222).

42066442 is a wasteful number, since it uses less digits than its factorization.

42066442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61725.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 42066442 is about 6485.8647842828. The cubic root of 42066442 is about 347.7858648721.

It can be divided in two parts, 4206 and 6442, that added together give a cube (10648 = 22³).

The spelling of 42066442 in words is "forty-two million, sixty-six thousand, four hundred forty-two".