202443420 has 24 divisors (see below), whose sum is σ = 566841744. Its totient is φ = 53984896.

The previous prime is 202443379. The next prime is 202443421. The reversal of 202443420 is 24344202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202443421) 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, 1686969 + ... + 1687088.

It is an arithmetic number, because the mean of its divisors is an integer number (23618406).

Almost surely, 2^202443420 is an apocalyptic number.

202443420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202443420 is an abundant number, since it is smaller than the sum of its proper divisors (364398324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202443420 is a wasteful number, since it uses less digits than its factorization.

202443420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374069 (or 3374067 counting only the distinct ones).

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

The square root of 202443420 is about 14228.2613133158. The cubic root of 202443420 is about 587.1754489298.

Adding to 202443420 its reverse (24344202), we get a palindrome (226787622).

The spelling of 202443420 in words is "two hundred two million, four hundred forty-three thousand, four hundred twenty".