42242928 has 160 divisors (see below), whose sum is σ = 141657600. Its totient is φ = 10533888.

The previous prime is 42242923. The next prime is 42242939. The reversal of 42242928 is 82924224.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82738 + ... + 83246.

It is an arithmetic number, because the mean of its divisors is an integer number (885360).

Almost surely, 2^42242928 is an apocalyptic number.

42242928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42242928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70828800).

42242928 is an abundant number, since it is smaller than the sum of its proper divisors (99414672).

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

42242928 is a wasteful number, since it uses less digits than its factorization.

42242928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 553 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 42242928 is about 6499.4559772338. The cubic root of 42242928 is about 348.2715544587.

The spelling of 42242928 in words is "forty-two million, two hundred forty-two thousand, nine hundred twenty-eight".