242244420 has 144 divisors (see below), whose sum is σ = 759159744. Its totient is φ = 57657600.

The previous prime is 242244419. The next prime is 242244421. The reversal of 242244420 is 24442242.

It is an interprime number because it is at equal distance from previous prime (242244419) and next prime (242244421).

It is a super-2 number, since 2×242244420² = 117364718042272800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242244421) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 442587 + ... + 443133.

Almost surely, 2^242244420 is an apocalyptic number.

242244420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242244420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379579872).

242244420 is an abundant number, since it is smaller than the sum of its proper divisors (516915324).

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

242244420 is a wasteful number, since it uses less digits than its factorization.

242244420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 242244420 is about 15564.2031598152. The cubic root of 242244420 is about 623.3776977267.

Adding to 242244420 its reverse (24442242), we get a palindrome (266686662).

The spelling of 242244420 in words is "two hundred forty-two million, two hundred forty-four thousand, four hundred twenty".