202142100443 has 4 divisors (see below), whose sum is σ = 202144506120. Its totient is φ = 202139694768.

The previous prime is 202142100431. The next prime is 202142100467. The reversal of 202142100443 is 344001241202.

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 202142100443 - 2¹² = 202142096347 is a prime.

It is a super-2 number, since 2×202142100443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202142100403) 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, 1072058 + ... + 1246431.

It is an arithmetic number, because the mean of its divisors is an integer number (50536126530).

Almost surely, 2^202142100443 is an apocalyptic number.

202142100443 is a deficient number, since it is larger than the sum of its proper divisors (2405677).

202142100443 is an equidigital number, since it uses as much as digits as its factorization.

202142100443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405676.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 202142100443 its reverse (344001241202), we get a palindrome (546143341645).

The spelling of 202142100443 in words is "two hundred two billion, one hundred forty-two million, one hundred thousand, four hundred forty-three".