42449144 has 8 divisors (see below), whose sum is σ = 79592160. Its totient is φ = 21224568.

The previous prime is 42449129. The next prime is 42449161. The reversal of 42449144 is 44194424.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 42449144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2653064 + ... + 2653079.

It is an arithmetic number, because the mean of its divisors is an integer number (9949020).

Almost surely, 2^42449144 is an apocalyptic number.

It is an amenable number.

42449144 is a deficient number, since it is larger than the sum of its proper divisors (37143016).

42449144 is a wasteful number, since it uses less digits than its factorization.

42449144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306149 (or 5306145 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The square root of 42449144 is about 6515.3007605175. The cubic root of 42449144 is about 348.8373502845.

The spelling of 42449144 in words is "forty-two million, four hundred forty-nine thousand, one hundred forty-four".