42782277 has 8 divisors (see below), whose sum is σ = 59523264. Its totient is φ = 27281408.

The previous prime is 42782261. The next prime is 42782309. The reversal of 42782277 is 77228724.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42782277 - 2⁴ = 42782261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42782237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309948 + ... + 310085.

It is an arithmetic number, because the mean of its divisors is an integer number (7440408).

Almost surely, 2^42782277 is an apocalyptic number.

It is an amenable number.

42782277 is a deficient number, since it is larger than the sum of its proper divisors (16740987).

42782277 is a wasteful number, since it uses less digits than its factorization.

42782277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620059.

The product of its digits is 87808, while the sum is 39.

The square root of 42782277 is about 6540.8162334681. The cubic root of 42782277 is about 349.7475104151.

It can be divided in two parts, 4278 and 2277, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 42782277 in words is "forty-two million, seven hundred eighty-two thousand, two hundred seventy-seven".