242640450 has 288 divisors, whose sum is σ = 771825600. Its totient is φ = 54120960.

The previous prime is 242640397. The next prime is 242640491. The reversal of 242640450 is 54046242.

242640450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4112521 + ... + 4112579.

It is an arithmetic number, because the mean of its divisors is an integer number (2679950).

Almost surely, 2^242640450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242640450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385912800).

242640450 is an abundant number, since it is smaller than the sum of its proper divisors (529185150).

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

242640450 is a wasteful number, since it uses less digits than its factorization.

242640450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 242640450 is about 15576.9204273502. The cubic root of 242640450 is about 623.7172196271.

Adding to 242640450 its reverse (54046242), we get a palindrome (296686692).

The spelling of 242640450 in words is "two hundred forty-two million, six hundred forty thousand, four hundred fifty".