42684380 has 24 divisors (see below), whose sum is σ = 91723632. Its totient is φ = 16676352.

The previous prime is 42684377. The next prime is 42684401. The reversal of 42684380 is 8348624.

It is a super-3 number, since 3×42684380³ (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 42684380.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23957 + ... + 25676.

It is an arithmetic number, because the mean of its divisors is an integer number (3821818).

Almost surely, 2^42684380 is an apocalyptic number.

It is an amenable number.

42684380 is an abundant number, since it is smaller than the sum of its proper divisors (49039252).

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

42684380 is a wasteful number, since it uses less digits than its factorization.

42684380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49685 (or 49683 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 42684380 is about 6533.3284013587. The cubic root of 42684380 is about 349.4805355229.

The spelling of 42684380 in words is "forty-two million, six hundred eighty-four thousand, three hundred eighty".