42784542 has 24 divisors (see below), whose sum is σ = 97579560. Its totient is φ = 13510800.

The previous prime is 42784517. The next prime is 42784579. The reversal of 42784542 is 24548724.

42784542 is a `hidden beast` number, since 42 + 78 + 4 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 42784497 and 42784506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62209 + ... + 62892.

It is an arithmetic number, because the mean of its divisors is an integer number (4065815).

Almost surely, 2^42784542 is an apocalyptic number.

42784542 is an abundant number, since it is smaller than the sum of its proper divisors (54795018).

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

42784542 is a wasteful number, since it uses less digits than its factorization.

42784542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125128 (or 125125 counting only the distinct ones).

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

The square root of 42784542 is about 6540.9893747047. The cubic root of 42784542 is about 349.7536824735.

The spelling of 42784542 in words is "forty-two million, seven hundred eighty-four thousand, five hundred forty-two".