202421111423 has 8 divisors (see below), whose sum is σ = 203288140800. Its totient is φ = 201554249848.

The previous prime is 202421111419. The next prime is 202421111437. The reversal of 202421111423 is 324111124202.

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 202421111423 - 2² = 202421111419 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 (202421111443) 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, 2780198 + ... + 2852076.

It is an arithmetic number, because the mean of its divisors is an integer number (25411017600).

Almost surely, 2^202421111423 is an apocalyptic number.

202421111423 is a deficient number, since it is larger than the sum of its proper divisors (867029377).

202421111423 is a wasteful number, since it uses less digits than its factorization.

202421111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83901.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 202421111423 its reverse (324111124202), we get a palindrome (526532235625).

The spelling of 202421111423 in words is "two hundred two billion, four hundred twenty-one million, one hundred eleven thousand, four hundred twenty-three".