42719728 has 20 divisors (see below), whose sum is σ = 83191600. Its totient is φ = 21250944.

The previous prime is 42719723. The next prime is 42719731. The reversal of 42719728 is 82791724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42719723) 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, 3525 + ... + 9892.

It is an arithmetic number, because the mean of its divisors is an integer number (4159580).

Almost surely, 2^42719728 is an apocalyptic number.

It is an amenable number.

42719728 is a deficient number, since it is larger than the sum of its proper divisors (40471872).

42719728 is a wasteful number, since it uses less digits than its factorization.

42719728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13624 (or 13618 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 42719728 is about 6536.0330476521. The cubic root of 42719728 is about 349.5769800886.

The spelling of 42719728 in words is "forty-two million, seven hundred nineteen thousand, seven hundred twenty-eight".