242755145 has 8 divisors (see below), whose sum is σ = 291642120. Its totient is φ = 193980160.

The previous prime is 242755129. The next prime is 242755151. The reversal of 242755145 is 541557242.

It can be written as a sum of positive squares in 4 ways, for example, as 26429881 + 216325264 = 5141^2 + 14708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242755145 - 2⁴ = 242755129 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 23150 + ... + 31959.

It is an arithmetic number, because the mean of its divisors is an integer number (36455265).

Almost surely, 2^242755145 is an apocalyptic number.

It is an amenable number.

242755145 is a deficient number, since it is larger than the sum of its proper divisors (48886975).

242755145 is an equidigital number, since it uses as much as digits as its factorization.

242755145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55995.

The product of its digits is 56000, while the sum is 35.

The square root of 242755145 is about 15580.6015609154. The cubic root of 242755145 is about 623.8154802122.

The spelling of 242755145 in words is "two hundred forty-two million, seven hundred fifty-five thousand, one hundred forty-five".