42739644 has 48 divisors (see below), whose sum is σ = 101803520. Its totient is φ = 13953600.

The previous prime is 42739633. The next prime is 42739693. The reversal of 42739644 is 44693724.

42739644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186522 + ... + 186750.

Almost surely, 2^42739644 is an apocalyptic number.

It is an amenable number.

42739644 is an abundant number, since it is smaller than the sum of its proper divisors (59063876).

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

42739644 is a wasteful number, since it uses less digits than its factorization.

42739644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 488 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 42739644 is about 6537.5564242307. The cubic root of 42739644 is about 349.6312960828.

The spelling of 42739644 in words is "forty-two million, seven hundred thirty-nine thousand, six hundred forty-four".