4066442 has 4 divisors (see below), whose sum is σ = 6099666. Its totient is φ = 2033220.

The previous prime is 4066441. The next prime is 4066453. The reversal of 4066442 is 2446604.

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

It can be written as a sum of positive squares in only one way, i.e., 2961841 + 1104601 = 1721^2 + 1051^2 .

It is not an unprimeable number, because it can be changed into a prime (4066441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1016609 + ... + 1016612.

Almost surely, 2^4066442 is an apocalyptic number.

4066442 is a deficient number, since it is larger than the sum of its proper divisors (2033224).

4066442 is a wasteful number, since it uses less digits than its factorization.

4066442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033223.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 4066442 is about 2016.5420898161. The cubic root of 4066442 is about 159.6142006991.

The spelling of 4066442 in words is "four million, sixty-six thousand, four hundred forty-two".