42084210 has 32 divisors (see below), whose sum is σ = 115431552. Its totient is φ = 9619200.

The previous prime is 42084193. The next prime is 42084233. The reversal of 42084210 is 1248024.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 99991 + ... + 100410.

It is an arithmetic number, because the mean of its divisors is an integer number (3607236).

Almost surely, 2^42084210 is an apocalyptic number.

42084210 is an abundant number, since it is smaller than the sum of its proper divisors (73347342).

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

42084210 is a wasteful number, since it uses less digits than its factorization.

42084210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200418.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 42084210 is about 6487.2343876262. The cubic root of 42084210 is about 347.8348238453.

The spelling of 42084210 in words is "forty-two million, eighty-four thousand, two hundred ten".