242318505 has 64 divisors (see below), whose sum is σ = 458825472. Its totient is φ = 107658240.

The previous prime is 242318497. The next prime is 242318509. The reversal of 242318505 is 505813242.

It is not a de Polignac number, because 242318505 - 2³ = 242318497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242318509) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370759 + ... + 371411.

It is an arithmetic number, because the mean of its divisors is an integer number (7169148).

Almost surely, 2^242318505 is an apocalyptic number.

It is an amenable number.

242318505 is a deficient number, since it is larger than the sum of its proper divisors (216506967).

242318505 is a wasteful number, since it uses less digits than its factorization.

242318505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 242318505 is about 15566.5829583759. The cubic root of 242318505 is about 623.4412399258.

The spelling of 242318505 in words is "two hundred forty-two million, three hundred eighteen thousand, five hundred five".