202420323 has 24 divisors (see below), whose sum is σ = 348844560. Its totient is φ = 115668000.

The previous prime is 202420301. The next prime is 202420331. The reversal of 202420323 is 323024202.

It is not a de Polignac number, because 202420323 - 2⁵ = 202420291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202420296 and 202420305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202420373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75178 + ... + 77823.

It is an arithmetic number, because the mean of its divisors is an integer number (14535190).

Almost surely, 2^202420323 is an apocalyptic number.

202420323 is a deficient number, since it is larger than the sum of its proper divisors (146424237).

202420323 is a wasteful number, since it uses less digits than its factorization.

202420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153024 (or 153011 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 202420323 is about 14227.4496309072. The cubic root of 202420323 is about 587.1531175757.

Adding to 202420323 its reverse (323024202), we get a palindrome (525444525).

The spelling of 202420323 in words is "two hundred two million, four hundred twenty thousand, three hundred twenty-three".