4042644 has 12 divisors (see below), whose sum is σ = 9432864. Its totient is φ = 1347544.

The previous prime is 4042639. The next prime is 4042673. The reversal of 4042644 is 4462404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 168432 + ... + 168455.

It is an arithmetic number, because the mean of its divisors is an integer number (786072).

Almost surely, 2^4042644 is an apocalyptic number.

It is an amenable number.

4042644 is an abundant number, since it is smaller than the sum of its proper divisors (5390220).

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

4042644 is a wasteful number, since it uses less digits than its factorization.

4042644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336894 (or 336892 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4042644 is about 2010.6327362301. The cubic root of 4042644 is about 159.3022217499.

It can be divided in two parts, 40426 and 44, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 4042644 in words is "four million, forty-two thousand, six hundred forty-four".