20020102 has 8 divisors (see below), whose sum is σ = 30173112. Its totient is φ = 9962400.

The previous prime is 20020093. The next prime is 20020103. The reversal of 20020102 is 20102002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23299 + ... + 24142.

It is an arithmetic number, because the mean of its divisors is an integer number (3771639).

Almost surely, 2^20020102 is an apocalyptic number.

20020102 is a deficient number, since it is larger than the sum of its proper divisors (10153010).

20020102 is a wasteful number, since it uses less digits than its factorization.

20020102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47654.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 20020102 is about 4474.3828624739. The cubic root of 20020102 is about 271.5326732461.

Adding to 20020102 its reverse (20102002), we get a palindrome (40122104).

It can be divided in two parts, 200 and 20102, that added together give a palindrome (20302).

The spelling of 20020102 in words is "twenty million, twenty thousand, one hundred two".