242321440 has 96 divisors (see below), whose sum is σ = 610848000. Its totient is φ = 90574848.

The previous prime is 242321413. The next prime is 242321449. The reversal of 242321440 is 44123242.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (242321449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239656 + ... + 240664.

It is an arithmetic number, because the mean of its divisors is an integer number (6363000).

Almost surely, 2^242321440 is an apocalyptic number.

242321440 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 242321440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305424000).

242321440 is an abundant number, since it is smaller than the sum of its proper divisors (368526560).

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

242321440 is a wasteful number, since it uses less digits than its factorization.

242321440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 242321440 is about 15566.6772305460. The cubic root of 242321440 is about 623.4437569886.

Adding to 242321440 its reverse (44123242), we get a palindrome (286444682).

The spelling of 242321440 in words is "two hundred forty-two million, three hundred twenty-one thousand, four hundred forty".