42449872 has 20 divisors (see below), whose sum is σ = 82360800. Its totient is φ = 21195488.

The previous prime is 42449843. The next prime is 42449879. The reversal of 42449872 is 27894424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42449879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14379 + ... + 17077.

It is an arithmetic number, because the mean of its divisors is an integer number (4118040).

Almost surely, 2^42449872 is an apocalyptic number.

It is an amenable number.

42449872 is a deficient number, since it is larger than the sum of its proper divisors (39910928).

42449872 is a wasteful number, since it uses less digits than its factorization.

42449872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3684 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 42449872 is about 6515.3566287656. The cubic root of 42449872 is about 348.8393444522.

The spelling of 42449872 in words is "forty-two million, four hundred forty-nine thousand, eight hundred seventy-two".