242047 has 8 divisors (see below), whose sum is σ = 267344. Its totient is φ = 217728.

The previous prime is 242009. The next prime is 242057. The reversal of 242047 is 740242.

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

It is a 7-Lehmer number, since φ(242047) divides (242047-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 242047 - 2⁷ = 241919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242057) 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, 343 + ... + 775.

It is an arithmetic number, because the mean of its divisors is an integer number (33418).

2²⁴²⁰⁴⁷ is an apocalyptic number.

242047 is a deficient number, since it is larger than the sum of its proper divisors (25297).

242047 is a wasteful number, since it uses less digits than its factorization.

242047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 242047 is about 491.9827232739. The cubic root of 242047 is about 62.3208308655.

Adding to 242047 its reverse (740242), we get a palindrome (982289).

The spelling of 242047 in words is "two hundred forty-two thousand, forty-seven", and thus it is an iban number.