202401021423 has 8 divisors (see below), whose sum is σ = 269899957936. Its totient is φ = 134918049600.

The previous prime is 202401021421. The next prime is 202401021461. The reversal of 202401021423 is 324120104202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202401021423 - 2¹ = 202401021421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202401021423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202401021421) 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, 3961558 + ... + 4012323.

It is an arithmetic number, because the mean of its divisors is an integer number (33737494742).

Almost surely, 2^202401021423 is an apocalyptic number.

202401021423 is a deficient number, since it is larger than the sum of its proper divisors (67498936513).

202401021423 is an equidigital number, since it uses as much as digits as its factorization.

202401021423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7982345.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 202401021423 its reverse (324120104202), we get a palindrome (526521125625).

The spelling of 202401021423 in words is "two hundred two billion, four hundred one million, twenty-one thousand, four hundred twenty-three".