420202423 has 8 divisors (see below), whose sum is σ = 442563200. Its totient is φ = 397866168.

The previous prime is 420202403. The next prime is 420202439. The reversal of 420202423 is 324202024.

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 420202423 - 2¹³ = 420194231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 420202423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420202403) 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, 36838 + ... + 46876.

It is an arithmetic number, because the mean of its divisors is an integer number (55320400).

Almost surely, 2^420202423 is an apocalyptic number.

420202423 is a deficient number, since it is larger than the sum of its proper divisors (22360777).

420202423 is a wasteful number, since it uses less digits than its factorization.

420202423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12261.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420202423 is about 20498.8395525210. The cubic root of 420202423 is about 749.0075305110.

Adding to 420202423 its reverse (324202024), we get a palindrome (744404447).

The spelling of 420202423 in words is "four hundred twenty million, two hundred two thousand, four hundred twenty-three".