242919 has 10 divisors (see below), whose sum is σ = 363000. Its totient is φ = 161892.

The previous prime is 242911. The next prime is 242923. The reversal of 242919 is 919242.

It is not a de Polignac number, because 242919 - 2³ = 242911 is a prime.

It is a super-2 number, since 2×242919² = 118019281122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 242892 and 242901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1419 + ... + 1580.

It is an arithmetic number, because the mean of its divisors is an integer number (36300).

2²⁴²⁹¹⁹ is an apocalyptic number.

242919 is a deficient number, since it is larger than the sum of its proper divisors (120081).

242919 is an equidigital number, since it uses as much as digits as its factorization.

242919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 3002 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 242919 is about 492.8681365234. The cubic root of 242919 is about 62.3955803083.

The spelling of 242919 in words is "two hundred forty-two thousand, nine hundred nineteen".