42757008 has 120 divisors (see below), whose sum is σ = 131295168. Its totient is φ = 11985792.

The previous prime is 42757003. The next prime is 42757021. The reversal of 42757008 is 80075724.

It is a super-2 number, since 2×42757008² = 3656323466224128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42757008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42757003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 806710 + ... + 806762.

Almost surely, 2^42757008 is an apocalyptic number.

42757008 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 42757008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65647584).

42757008 is an abundant number, since it is smaller than the sum of its proper divisors (88538160).

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

42757008 is an frugal number, since it uses more digits than its factorization.

42757008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 42757008 is about 6538.8843085040. The cubic root of 42757008 is about 349.6786383571.

The spelling of 42757008 in words is "forty-two million, seven hundred fifty-seven thousand, eight".