242755240 has 128 divisors (see below), whose sum is σ = 711970560. Its totient is φ = 72290304.

The previous prime is 242755181. The next prime is 242755277. The reversal of 242755240 is 42557242.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 59919 + ... + 63841.

It is an arithmetic number, because the mean of its divisors is an integer number (5562270).

Almost surely, 2^242755240 is an apocalyptic number.

242755240 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 242755240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355985280).

242755240 is an abundant number, since it is smaller than the sum of its proper divisors (469215320).

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

242755240 is a wasteful number, since it uses less digits than its factorization.

242755240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3967 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 242755240 is about 15580.6046095779. The cubic root of 242755240 is about 623.8155615870.

The spelling of 242755240 in words is "two hundred forty-two million, seven hundred fifty-five thousand, two hundred forty".