42684470 has 16 divisors (see below), whose sum is σ = 77059728. Its totient is φ = 17023200.

The previous prime is 42684449. The next prime is 42684479. The reversal of 42684470 is 7448624.

It is a super-3 number, since 3×42684470³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42684470.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42684479) by changing a digit.

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, 2681 + ... + 9620.

It is an arithmetic number, because the mean of its divisors is an integer number (4816233).

Almost surely, 2^42684470 is an apocalyptic number.

42684470 is a deficient number, since it is larger than the sum of its proper divisors (34375258).

42684470 is a wasteful number, since it uses less digits than its factorization.

42684470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 42684470 is about 6533.3352891154. The cubic root of 42684470 is about 349.4807811493.

The spelling of 42684470 in words is "forty-two million, six hundred eighty-four thousand, four hundred seventy".