20123442202 has 8 divisors (see below), whose sum is σ = 30484026612. Its totient is φ = 9962100000.

The previous prime is 20123442149. The next prime is 20123442211. The reversal of 20123442202 is 20224432102.

It can be written as a sum of positive squares in 2 ways, for example, as 19104491961 + 1018950241 = 138219^2 + 31921^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49810299 + ... + 49810702.

Almost surely, 2^20123442202 is an apocalyptic number.

20123442202 is a deficient number, since it is larger than the sum of its proper divisors (10360584410).

20123442202 is a wasteful number, since it uses less digits than its factorization.

20123442202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99621104.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20123442202 its reverse (20224432102), we get a palindrome (40347874304).

The spelling of 20123442202 in words is "twenty billion, one hundred twenty-three million, four hundred forty-two thousand, two hundred two".