202243121423 has 8 divisors (see below), whose sum is σ = 231434012448. Its totient is φ = 173126984544.

The previous prime is 202243121407. The next prime is 202243121449. The reversal of 202243121423 is 324121342202.

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 202243121423 - 2⁴ = 202243121407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202243121392 and 202243121401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202243121473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18682736 + ... + 18693557.

It is an arithmetic number, because the mean of its divisors is an integer number (28929251556).

Almost surely, 2^202243121423 is an apocalyptic number.

202243121423 is a deficient number, since it is larger than the sum of its proper divisors (29190891025).

202243121423 is an equidigital number, since it uses as much as digits as its factorization.

202243121423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37377073.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 202243121423 its reverse (324121342202), we get a palindrome (526364463625).

The spelling of 202243121423 in words is "two hundred two billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred twenty-three".