42684430 has 16 divisors (see below), whose sum is σ = 77180544. Its totient is φ = 16996320.

The previous prime is 42684401. The next prime is 42684437. The reversal of 42684430 is 3448624.

It is a super-3 number, since 3×42684430³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42684392 and 42684401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42684437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7341 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (4823784).

Almost surely, 2^42684430 is an apocalyptic number.

42684430 is a deficient number, since it is larger than the sum of its proper divisors (34496114).

42684430 is a wasteful number, since it uses less digits than its factorization.

42684430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19371.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 42684430 is about 6533.3322278911. The cubic root of 42684430 is about 349.4806719820.

The spelling of 42684430 in words is "forty-two million, six hundred eighty-four thousand, four hundred thirty".