42738448 has 20 divisors (see below), whose sum is σ = 87164560. Its totient is φ = 20244384.

The previous prime is 42738433. The next prime is 42738457. The reversal of 42738448 is 84483724.

It is a self number, because there is not a number n which added to its sum of digits gives 42738448.

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, 69990 + ... + 70597.

It is an arithmetic number, because the mean of its divisors is an integer number (4358228).

Almost surely, 2^42738448 is an apocalyptic number.

It is an amenable number.

42738448 is an abundant number, since it is smaller than the sum of its proper divisors (44426112).

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

42738448 is a wasteful number, since it uses less digits than its factorization.

42738448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140614 (or 140608 counting only the distinct ones).

The product of its digits is 172032, while the sum is 40.

The square root of 42738448 is about 6537.4649521049. The cubic root of 42738448 is about 349.6280347630.

It can be divided in two parts, 4273 and 8448, that added together give a palindrome (12721).

The spelling of 42738448 in words is "forty-two million, seven hundred thirty-eight thousand, four hundred forty-eight".