242920 has 16 divisors (see below), whose sum is σ = 546660. Its totient is φ = 97152.

The previous prime is 242911. The next prime is 242923. The reversal of 242920 is 29242.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 236196 + 6724 = 486^2 + 82^2 .

It is not an unprimeable number, because it can be changed into a prime (242923) by changing a digit.

242920 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 3 ways as a sum of consecutive naturals, for example, 2997 + ... + 3076.

2²⁴²⁹²⁰ is an apocalyptic number.

242920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242920 is an abundant number, since it is smaller than the sum of its proper divisors (303740).

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

242920 is a wasteful number, since it uses less digits than its factorization.

242920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6084 (or 6080 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 242920 is about 492.8691509924. The cubic root of 242920 is about 62.3956659273.

The spelling of 242920 in words is "two hundred forty-two thousand, nine hundred twenty".