202422423 has 16 divisors (see below), whose sum is σ = 314274816. Its totient is φ = 113486880.

The previous prime is 202422419. The next prime is 202422427. The reversal of 202422423 is 324224202.

It is an interprime number because it is at equal distance from previous prime (202422419) and next prime (202422427).

It is not a de Polignac number, because 202422423 - 2² = 202422419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 202422423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202422427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89823 + ... + 92048.

It is an arithmetic number, because the mean of its divisors is an integer number (19642176).

Almost surely, 2^202422423 is an apocalyptic number.

202422423 is a deficient number, since it is larger than the sum of its proper divisors (111852393).

202422423 is a wasteful number, since it uses less digits than its factorization.

202422423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181934.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 202422423 is about 14227.5234317150. The cubic root of 202422423 is about 587.1551480327.

Adding to 202422423 its reverse (324224202), we get a palindrome (526646625).

The spelling of 202422423 in words is "two hundred two million, four hundred twenty-two thousand, four hundred twenty-three".