42066446 has 4 divisors (see below), whose sum is σ = 63099672. Its totient is φ = 21033222.

The previous prime is 42066433. The next prime is 42066461. The reversal of 42066446 is 64466024.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10516610 + ... + 10516613.

It is an arithmetic number, because the mean of its divisors is an integer number (15774918).

Almost surely, 2^42066446 is an apocalyptic number.

42066446 is a deficient number, since it is larger than the sum of its proper divisors (21033226).

42066446 is a wasteful number, since it uses less digits than its factorization.

42066446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033225.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 42066446 is about 6485.8650926457. The cubic root of 42066446 is about 347.7858758954.

It can be divided in two parts, 420 and 66446, that added together give a palindrome (66866).

The spelling of 42066446 in words is "forty-two million, sixty-six thousand, four hundred forty-six".