42946644 has 24 divisors (see below), whose sum is σ = 107917600. Its totient is φ = 13214304.

The previous prime is 42946633. The next prime is 42946663. The reversal of 42946644 is 44664924.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137494 + ... + 137805.

Almost surely, 2^42946644 is an apocalyptic number.

It is an amenable number.

42946644 is an abundant number, since it is smaller than the sum of its proper divisors (64970956).

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

42946644 is a wasteful number, since it uses less digits than its factorization.

42946644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275319 (or 275317 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The square root of 42946644 is about 6553.3689046169. The cubic root of 42946644 is about 350.1948411738.

The spelling of 42946644 in words is "forty-two million, nine hundred forty-six thousand, six hundred forty-four".