42782701 has 4 divisors (see below), whose sum is σ = 46073692. Its totient is φ = 39491712.

The previous prime is 42782689. The next prime is 42782711. The reversal of 42782701 is 10728724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26574025 + 16208676 = 5155^2 + 4026^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42782701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42782711) 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, 1645476 + ... + 1645501.

It is an arithmetic number, because the mean of its divisors is an integer number (11518423).

Almost surely, 2^42782701 is an apocalyptic number.

It is an amenable number.

42782701 is a deficient number, since it is larger than the sum of its proper divisors (3290991).

42782701 is a wasteful number, since it uses less digits than its factorization.

42782701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290990.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 42782701 is about 6540.8486452447. The cubic root of 42782701 is about 349.7486658192.

The spelling of 42782701 in words is "forty-two million, seven hundred eighty-two thousand, seven hundred one".