42782544 has 60 divisors (see below), whose sum is σ = 136839456. Its totient is φ = 12223296.

The previous prime is 42782543. The next prime is 42782563. The reversal of 42782544 is 44528724.

42782544 is a `hidden beast` number, since 42 + 78 + 2 + 544 = 666.

It is a super-2 number, since 2×42782544² = 3660692142223872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 42782499 and 42782508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42782543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20214 + ... + 22229.

Almost surely, 2^42782544 is an apocalyptic number.

It is an amenable number.

42782544 is an abundant number, since it is smaller than the sum of its proper divisors (94056912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42782544 is a wasteful number, since it uses less digits than its factorization.

42782544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42464 (or 42455 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 42782544 is about 6540.8366437330. The cubic root of 42782544 is about 349.7482379936.

The spelling of 42782544 in words is "forty-two million, seven hundred eighty-two thousand, five hundred forty-four".