21142102030143 has 4 divisors (see below), whose sum is σ = 28189469373528. Its totient is φ = 14094734686760.

The previous prime is 21142102030141. The next prime is 21142102030193. The reversal of 21142102030143 is 34103020124112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21142102030143 - 2¹ = 21142102030141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21142102030141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523683671688 + ... + 3523683671693.

It is an arithmetic number, because the mean of its divisors is an integer number (7047367343382).

Almost surely, 2^{21142102030143} is an apocalyptic number.

21142102030143 is a deficient number, since it is larger than the sum of its proper divisors (7047367343385).

21142102030143 is an equidigital number, since it uses as much as digits as its factorization.

21142102030143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047367343384.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 21142102030143 its reverse (34103020124112), we get a palindrome (55245122154255).

The spelling of 21142102030143 in words is "twenty-one trillion, one hundred forty-two billion, one hundred two million, thirty thousand, one hundred forty-three".