202430420 has 12 divisors (see below), whose sum is σ = 425103924. Its totient is φ = 80972160.

The previous prime is 202430413. The next prime is 202430453. The reversal of 202430420 is 24034202.

It can be written as a sum of positive squares in 2 ways, for example, as 142181776 + 60248644 = 11924^2 + 7762^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060741 + ... + 5060780.

It is an arithmetic number, because the mean of its divisors is an integer number (35425327).

Almost surely, 2^202430420 is an apocalyptic number.

202430420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202430420 is an abundant number, since it is smaller than the sum of its proper divisors (222673504).

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

202430420 is a wasteful number, since it uses less digits than its factorization.

202430420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10121530 (or 10121528 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 202430420 is about 14227.8044687155. The cubic root of 202430420 is about 587.1628800777.

Adding to 202430420 its reverse (24034202), we get a palindrome (226464622).

The spelling of 202430420 in words is "two hundred two million, four hundred thirty thousand, four hundred twenty".