20084142 has 16 divisors (see below), whose sum is σ = 43258320. Its totient is φ = 6179712.

The previous prime is 20084117. The next prime is 20084143. The reversal of 20084142 is 24148002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084143) 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, 128667 + ... + 128822.

It is an arithmetic number, because the mean of its divisors is an integer number (2703645).

Almost surely, 2^20084142 is an apocalyptic number.

20084142 is an abundant number, since it is smaller than the sum of its proper divisors (23174178).

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

20084142 is a wasteful number, since it uses less digits than its factorization.

20084142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257507.

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

The square root of 20084142 is about 4481.5334429188. The cubic root of 20084142 is about 271.8218899561.

The spelling of 20084142 in words is "twenty million, eighty-four thousand, one hundred forty-two".