302421420 has 72 divisors (see below), whose sum is σ = 1048398624. Its totient is φ = 69124608.

The previous prime is 302421391. The next prime is 302421421. The reversal of 302421420 is 24124203.

302421420 is a `hidden beast` number, since 3 + 0 + 242 + 1 + 420 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 302421393 and 302421402.

It is not an unprimeable number, because it can be changed into a prime (302421421) 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, 118749 + ... + 121268.

It is an arithmetic number, because the mean of its divisors is an integer number (14561092).

Almost surely, 2^302421420 is an apocalyptic number.

302421420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

302421420 is an abundant number, since it is smaller than the sum of its proper divisors (745977204).

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

302421420 is a wasteful number, since it uses less digits than its factorization.

302421420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240039 (or 240034 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 302421420 is about 17390.2679680332. The cubic root of 302421420 is about 671.2292129680.

Adding to 302421420 its reverse (24124203), we get a palindrome (326545623).

The spelling of 302421420 in words is "three hundred two million, four hundred twenty-one thousand, four hundred twenty".