20142210 has 64 divisors (see below), whose sum is σ = 53581824. Its totient is φ = 4804800.

The previous prime is 20142209. The next prime is 20142247. The reversal of 20142210 is 1224102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21655 + ... + 22565.

It is an arithmetic number, because the mean of its divisors is an integer number (837216).

Almost surely, 2^20142210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20142210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26790912).

20142210 is an abundant number, since it is smaller than the sum of its proper divisors (33439614).

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

20142210 is a wasteful number, since it uses less digits than its factorization.

20142210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 20142210 is about 4488.0073529352. The cubic root of 20142210 is about 272.0836049945.

Adding to 20142210 its reverse (1224102), we get a palindrome (21366312).

It can be divided in two parts, 2014 and 2210, that added together give a palindrome (4224).

The spelling of 20142210 in words is "twenty million, one hundred forty-two thousand, two hundred ten".