20423210102 has 8 divisors (see below), whose sum is σ = 30636900216. Its totient is φ = 10210910032.

The previous prime is 20423210069. The next prime is 20423210131. The reversal of 20423210102 is 20101232402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309968 + ... + 370035.

It is an arithmetic number, because the mean of its divisors is an integer number (3829612527).

Almost surely, 2^20423210102 is an apocalyptic number.

20423210102 is a deficient number, since it is larger than the sum of its proper divisors (10213690114).

20423210102 is a wasteful number, since it uses less digits than its factorization.

20423210102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695022.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20423210102 its reverse (20101232402), we get a palindrome (40524442504).

The spelling of 20423210102 in words is "twenty billion, four hundred twenty-three million, two hundred ten thousand, one hundred two".