202120042343 has 4 divisors (see below), whose sum is σ = 206820508488. Its totient is φ = 197419576200.

The previous prime is 202120042291. The next prime is 202120042349. The reversal of 202120042343 is 343240021202.

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 202120042343 - 2¹² = 202120038247 is a prime.

It is a super-2 number, since 2×202120042343² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202120042349) 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, 2350233008 + ... + 2350233093.

It is an arithmetic number, because the mean of its divisors is an integer number (51705127122).

Almost surely, 2^202120042343 is an apocalyptic number.

202120042343 is a deficient number, since it is larger than the sum of its proper divisors (4700466145).

202120042343 is an equidigital number, since it uses as much as digits as its factorization.

202120042343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4700466144.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 202120042343 its reverse (343240021202), we get a palindrome (545360063545).

The spelling of 202120042343 in words is "two hundred two billion, one hundred twenty million, forty-two thousand, three hundred forty-three".