242021420 has 48 divisors (see below), whose sum is σ = 520877280. Its totient is φ = 94431744.

The previous prime is 242021419. The next prime is 242021447. The reversal of 242021420 is 24120242.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145232 + ... + 146888.

It is an arithmetic number, because the mean of its divisors is an integer number (10851610).

Almost surely, 2^242021420 is an apocalyptic number.

242021420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242021420 is an abundant number, since it is smaller than the sum of its proper divisors (278855860).

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

242021420 is a wasteful number, since it uses less digits than its factorization.

242021420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 242021420 is about 15557.0376357454. The cubic root of 242021420 is about 623.1863539247.

Adding to 242021420 its reverse (24120242), we get a palindrome (266141662).

The spelling of 242021420 in words is "two hundred forty-two million, twenty-one thousand, four hundred twenty".