242425856 has 56 divisors (see below), whose sum is σ = 491293404. Its totient is φ = 119603200.

The previous prime is 242425853. The next prime is 242425889. The reversal of 242425856 is 658524242.

It can be written as a sum of positive squares in 2 ways, for example, as 172134400 + 70291456 = 13120^2 + 8384^2 .

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (242425853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827246 + ... + 827538.

Almost surely, 2^242425856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242425856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245646702).

242425856 is an abundant number, since it is smaller than the sum of its proper divisors (248867548).

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

242425856 is an equidigital number, since it uses as much as digits as its factorization.

242425856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 396 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 242425856 is about 15570.0307000340. The cubic root of 242425856 is about 623.5332911701.

The spelling of 242425856 in words is "two hundred forty-two million, four hundred twenty-five thousand, eight hundred fifty-six".