242818 has 8 divisors (see below), whose sum is σ = 366912. Its totient is φ = 120516.

The previous prime is 242813. The next prime is 242819. The reversal of 242818 is 818242.

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

It is a super-2 number, since 2×242818² = 117921162248, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 242792 and 242801.

It is not an unprimeable number, because it can be changed into a prime (242813) 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, 30 + ... + 697.

It is an arithmetic number, because the mean of its divisors is an integer number (45864).

2²⁴²⁸¹⁸ is an apocalyptic number.

242818 is a deficient number, since it is larger than the sum of its proper divisors (124094).

242818 is a wasteful number, since it uses less digits than its factorization.

242818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896.

The product of its digits is 1024, while the sum is 25.

The square root of 242818 is about 492.7656643883. The cubic root of 242818 is about 62.3869315718.

The spelling of 242818 in words is "two hundred forty-two thousand, eight hundred eighteen".