42925728 has 48 divisors (see below), whose sum is σ = 117585216. Its totient is φ = 13685760.

The previous prime is 42925721. The next prime is 42925733. The reversal of 42925728 is 82752924.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (42925721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7513 + ... + 11928.

It is an arithmetic number, because the mean of its divisors is an integer number (2449692).

Almost surely, 2^42925728 is an apocalyptic number.

42925728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42925728 is an abundant number, since it is smaller than the sum of its proper divisors (74659488).

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

42925728 is a wasteful number, since it uses less digits than its factorization.

42925728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19477 (or 19469 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 42925728 is about 6551.7728898368. The cubic root of 42925728 is about 350.1379809706.

The spelling of 42925728 in words is "forty-two million, nine hundred twenty-five thousand, seven hundred twenty-eight".