202106423 has 8 divisors (see below), whose sum is σ = 209234880. Its totient is φ = 194988640.

The previous prime is 202106357. The next prime is 202106441. The reversal of 202106423 is 324601202.

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 202106423 - 2⁸ = 202106167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202106395 and 202106404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202106473) 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, 67586 + ... + 70512.

It is an arithmetic number, because the mean of its divisors is an integer number (26154360).

Almost surely, 2^202106423 is an apocalyptic number.

202106423 is a deficient number, since it is larger than the sum of its proper divisors (7128457).

202106423 is a wasteful number, since it uses less digits than its factorization.

202106423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5337.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 202106423 is about 14216.4138586354. The cubic root of 202106423 is about 586.8494545284.

Adding to 202106423 its reverse (324601202), we get a palindrome (526707625).

The spelling of 202106423 in words is "two hundred two million, one hundred six thousand, four hundred twenty-three".