21302040143143 has 8 divisors (see below), whose sum is σ = 21364241169600. Its totient is φ = 21239845766880.

The previous prime is 21302040143099. The next prime is 21302040143159. The reversal of 21302040143143 is 34134104020312.

It is a happy number.

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 21302040143143 - 2³⁷ = 21164601189671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302040143173) 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, 4789746 + ... + 8096032.

It is an arithmetic number, because the mean of its divisors is an integer number (2670530146200).

Almost surely, 2^{21302040143143} is an apocalyptic number.

21302040143143 is a deficient number, since it is larger than the sum of its proper divisors (62201026457).

21302040143143 is a wasteful number, since it uses less digits than its factorization.

21302040143143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325097.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21302040143143 its reverse (34134104020312), we get a palindrome (55436144163455).

The spelling of 21302040143143 in words is "twenty-one trillion, three hundred two billion, forty million, one hundred forty-three thousand, one hundred forty-three".