242478311 has 16 divisors (see below), whose sum is σ = 257445888. Its totient is φ = 228031200.

The previous prime is 242478289. The next prime is 242478317. The reversal of 242478311 is 113874242.

It is a cyclic number.

It is not a de Polignac number, because 242478311 - 2¹⁴ = 242461927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242478317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236981 + ... + 238001.

It is an arithmetic number, because the mean of its divisors is an integer number (16090368).

Almost surely, 2^242478311 is an apocalyptic number.

242478311 is a deficient number, since it is larger than the sum of its proper divisors (14967577).

242478311 is a wasteful number, since it uses less digits than its factorization.

242478311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262.

The product of its digits is 10752, while the sum is 32.

The square root of 242478311 is about 15571.7150950048. The cubic root of 242478311 is about 623.5782603559.

The spelling of 242478311 in words is "two hundred forty-two million, four hundred seventy-eight thousand, three hundred eleven".