42778682 has 8 divisors (see below), whose sum is σ = 64286976. Its totient is φ = 21349692.

The previous prime is 42778669. The next prime is 42778691. The reversal of 42778682 is 28687724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18458 + ... + 20645.

It is an arithmetic number, because the mean of its divisors is an integer number (8035872).

Almost surely, 2^42778682 is an apocalyptic number.

42778682 is a deficient number, since it is larger than the sum of its proper divisors (21508294).

42778682 is a wasteful number, since it uses less digits than its factorization.

42778682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39652.

The product of its digits is 301056, while the sum is 44.

The square root of 42778682 is about 6540.5414148983. The cubic root of 42778682 is about 349.7377136986.

The spelling of 42778682 in words is "forty-two million, seven hundred seventy-eight thousand, six hundred eighty-two".