42704080 has 20 divisors (see below), whose sum is σ = 99287172. Its totient is φ = 17081600.

The previous prime is 42704041. The next prime is 42704089. The reversal of 42704080 is 8040724.

It can be written as a sum of positive squares in 2 ways, for example, as 9388096 + 33315984 = 3064^2 + 5772^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42704089) 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, 266821 + ... + 266980.

Almost surely, 2^42704080 is an apocalyptic number.

42704080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42704080 is an abundant number, since it is smaller than the sum of its proper divisors (56583092).

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

42704080 is a wasteful number, since it uses less digits than its factorization.

42704080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533814 (or 533808 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 42704080 is about 6534.8358816423. The cubic root of 42704080 is about 349.5342921715.

The spelling of 42704080 in words is "forty-two million, seven hundred four thousand, eighty".