42787563 has 64 divisors (see below), whose sum is σ = 75586560. Its totient is φ = 20901888.

The previous prime is 42787561. The next prime is 42787583. The reversal of 42787563 is 36578724.

It is not a de Polignac number, because 42787563 - 2¹ = 42787561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42787561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 378595 + ... + 378707.

It is an arithmetic number, because the mean of its divisors is an integer number (1181040).

Almost surely, 2^42787563 is an apocalyptic number.

42787563 is a deficient number, since it is larger than the sum of its proper divisors (32798997).

42787563 is a wasteful number, since it uses less digits than its factorization.

42787563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its digits is 282240, while the sum is 42.

The square root of 42787563 is about 6541.2202989962. The cubic root of 42787563 is about 349.7619142706.

It can be divided in two parts, 427 and 87563, that added together give a triangular number (87990 = T₄₁₉).

The spelling of 42787563 in words is "forty-two million, seven hundred eighty-seven thousand, five hundred sixty-three".