42782340 has 24 divisors (see below), whose sum is σ = 119790720. Its totient is φ = 11408608.

The previous prime is 42782329. The next prime is 42782351. The reversal of 42782340 is 4328724.

It is an interprime number because it is at equal distance from previous prime (42782329) and next prime (42782351).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42782298 and 42782307.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 356460 + ... + 356579.

It is an arithmetic number, because the mean of its divisors is an integer number (4991280).

Almost surely, 2^42782340 is an apocalyptic number.

It is an amenable number.

42782340 is an abundant number, since it is smaller than the sum of its proper divisors (77008380).

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

42782340 is a wasteful number, since it uses less digits than its factorization.

42782340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713051 (or 713049 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 42782340 is about 6540.8210493790. The cubic root of 42782340 is about 349.7476820912.

The spelling of 42782340 in words is "forty-two million, seven hundred eighty-two thousand, three hundred forty".