20143302421 has 8 divisors (see below), whose sum is σ = 22000283424. Its totient is φ = 18290616720.

The previous prime is 20143302383. The next prime is 20143302427. The reversal of 20143302421 is 12420334102.

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

It is a cyclic number.

It is not a de Polignac number, because 20143302421 - 2⁹ = 20143301909 is a prime.

It is a super-2 number, since 2×20143302421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20143302392 and 20143302401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143302427) 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, 1064011 + ... + 1082776.

It is an arithmetic number, because the mean of its divisors is an integer number (2750035428).

Almost surely, 2^20143302421 is an apocalyptic number.

It is an amenable number.

20143302421 is a deficient number, since it is larger than the sum of its proper divisors (1856981003).

20143302421 is a wasteful number, since it uses less digits than its factorization.

20143302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147651.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20143302421 its reverse (12420334102), we get a palindrome (32563636523).

The spelling of 20143302421 in words is "twenty billion, one hundred forty-three million, three hundred two thousand, four hundred twenty-one".