202420420 has 24 divisors (see below), whose sum is σ = 425767104. Its totient is φ = 80837856.

The previous prime is 202420391. The next prime is 202420487. The reversal of 202420420 is 24024202.

202420420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 202420394 and 202420403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5119 + ... + 20761.

It is an arithmetic number, because the mean of its divisors is an integer number (17740296).

Almost surely, 2^202420420 is an apocalyptic number.

202420420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202420420 is an abundant number, since it is smaller than the sum of its proper divisors (223346684).

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

202420420 is a wasteful number, since it uses less digits than its factorization.

202420420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16299 (or 16297 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 202420420 is about 14227.4530398100. The cubic root of 202420420 is about 587.1532113637.

Adding to 202420420 its reverse (24024202), we get a palindrome (226444622).

The spelling of 202420420 in words is "two hundred two million, four hundred twenty thousand, four hundred twenty".