42782503 has 4 divisors (see below), whose sum is σ = 43004368. Its totient is φ = 42560640.

The previous prime is 42782491. The next prime is 42782513. The reversal of 42782503 is 30528724.

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

It is a cyclic number.

It is not a de Polignac number, because 42782503 - 2¹³ = 42774311 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 (42782513) 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, 110643 + ... + 111028.

It is an arithmetic number, because the mean of its divisors is an integer number (10751092).

Almost surely, 2^42782503 is an apocalyptic number.

42782503 is a deficient number, since it is larger than the sum of its proper divisors (221865).

42782503 is a wasteful number, since it uses less digits than its factorization.

42782503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221864.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 42782503 is about 6540.8335095766. The cubic root of 42782503 is about 349.7481262683.

The spelling of 42782503 in words is "forty-two million, seven hundred eighty-two thousand, five hundred three".