242140 has 12 divisors (see below), whose sum is σ = 508536. Its totient is φ = 96848.

The previous prime is 242129. The next prime is 242147. The reversal of 242140 is 41242.

It is a self number, because there is not a number n which added to its sum of digits gives 242140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6034 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (42378).

2²⁴²¹⁴⁰ is an apocalyptic number.

242140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242140 is an abundant number, since it is smaller than the sum of its proper divisors (266396).

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

242140 is a wasteful number, since it uses less digits than its factorization.

242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12116 (or 12114 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 242140 is about 492.0772297109. The cubic root of 242140 is about 62.3288115403.

Adding to 242140 its reverse (41242), we get a palindrome (283382).

It can be divided in two parts, 24 and 2140, that multiplied together give a triangular number (51360 = T₃₂₀).

The spelling of 242140 in words is "two hundred forty-two thousand, one hundred forty", and thus it is an iban number.