242940 has 24 divisors (see below), whose sum is σ = 680400. Its totient is φ = 64768.

The previous prime is 242927. The next prime is 242971. The reversal of 242940 is 49242.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

242940 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1965 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (28350).

2²⁴²⁹⁴⁰ is an apocalyptic number.

242940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242940 is an abundant number, since it is smaller than the sum of its proper divisors (437460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242940 is a wasteful number, since it uses less digits than its factorization.

242940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 242940 is about 492.8894399356. The cubic root of 242940 is about 62.3973782593.

The spelling of 242940 in words is "two hundred forty-two thousand, nine hundred forty".