42684530 has 16 divisors (see below), whose sum is σ = 87808320. Its totient is φ = 14634672.

The previous prime is 42684517. The next prime is 42684541. The reversal of 42684530 is 3548624.

It is a super-3 number, since 3×42684530³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304820 + ... + 304959.

It is an arithmetic number, because the mean of its divisors is an integer number (5488020).

Almost surely, 2^42684530 is an apocalyptic number.

42684530 is an abundant number, since it is smaller than the sum of its proper divisors (45123790).

42684530 is a wasteful number, since it uses less digits than its factorization.

42684530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609793.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 42684530 is about 6533.3398809491. The cubic root of 42684530 is about 349.4809449000.

The spelling of 42684530 in words is "forty-two million, six hundred eighty-four thousand, five hundred thirty".