242719 has 8 divisors (see below), whose sum is σ = 258912. Its totient is φ = 227040.

The previous prime is 242713. The next prime is 242729. The reversal of 242719 is 917242.

242719 is nontrivially palindromic in base 15.

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

It is a cyclic number.

It is not a de Polignac number, because 242719 - 2⁷ = 242591 is a prime.

It is a super-2 number, since 2×242719² = 117825025922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242693 and 242702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242713) 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 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 1489.

It is an arithmetic number, because the mean of its divisors is an integer number (32364).

2²⁴²⁷¹⁹ is an apocalyptic number.

242719 is a deficient number, since it is larger than the sum of its proper divisors (16193).

242719 is a wasteful number, since it uses less digits than its factorization.

242719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 1008, while the sum is 25.

The square root of 242719 is about 492.6652007195. The cubic root of 242719 is about 62.3784517697.

It can be divided in two parts, 242 and 719, that added together give a square (961 = 31²).

The spelling of 242719 in words is "two hundred forty-two thousand, seven hundred nineteen".