242428 has 6 divisors (see below), whose sum is σ = 424256. Its totient is φ = 121212.

The previous prime is 242419. The next prime is 242441. The reversal of 242428 is 824242.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 242399 and 242408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30300 + ... + 30307.

2²⁴²⁴²⁸ is an apocalyptic number.

It is an amenable number.

242428 is a deficient number, since it is larger than the sum of its proper divisors (181828).

242428 is a wasteful number, since it uses less digits than its factorization.

242428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60611 (or 60609 counting only the distinct ones).

The product of its digits is 1024, while the sum is 22.

The square root of 242428 is about 492.3697797388. The cubic root of 242428 is about 62.3535129329.

The spelling of 242428 in words is "two hundred forty-two thousand, four hundred twenty-eight".