242619 has 8 divisors (see below), whose sum is σ = 348432. Its totient is φ = 149280.

The previous prime is 242617. The next prime is 242621. The reversal of 242619 is 916242.

It is an interprime number because it is at equal distance from previous prime (242617) and next prime (242621).

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

It is not a de Polignac number, because 242619 - 2¹ = 242617 is a prime.

It is a super-2 number, since 2×242619² = 117727958322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3072 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (43554).

2²⁴²⁶¹⁹ is an apocalyptic number.

242619 is a deficient number, since it is larger than the sum of its proper divisors (105813).

242619 is a wasteful number, since it uses less digits than its factorization.

242619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6237.

The product of its digits is 864, while the sum is 24.

The square root of 242619 is about 492.5637014641. The cubic root of 242619 is about 62.3698839718.

It can be divided in two parts, 242 and 619, that added together give a triangular number (861 = T₄₁).

The spelling of 242619 in words is "two hundred forty-two thousand, six hundred nineteen".