42782536 has 8 divisors (see below), whose sum is σ = 80217270. Its totient is φ = 21391264.

The previous prime is 42782527. The next prime is 42782539. The reversal of 42782536 is 63528724.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 3218436 = 6290^2 + 1794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42782495 and 42782504.

It is not an unprimeable number, because it can be changed into a prime (42782539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2673901 + ... + 2673916.

Almost surely, 2^42782536 is an apocalyptic number.

It is an amenable number.

42782536 is a deficient number, since it is larger than the sum of its proper divisors (37434734).

42782536 is a wasteful number, since it uses less digits than its factorization.

42782536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347823 (or 5347819 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 42782536 is about 6540.8360321904. The cubic root of 42782536 is about 349.7482161935.

The spelling of 42782536 in words is "forty-two million, seven hundred eighty-two thousand, five hundred thirty-six".