242489347 has 4 divisors (see below), whose sum is σ = 250311616. Its totient is φ = 234667080.

The previous prime is 242489339. The next prime is 242489369. The reversal of 242489347 is 743984242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743984242 = 2 ⋅371992121.

It is a cyclic number.

It is not a de Polignac number, because 242489347 - 2³ = 242489339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242481347) 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, 3911088 + ... + 3911149.

It is an arithmetic number, because the mean of its divisors is an integer number (62577904).

Almost surely, 2^242489347 is an apocalyptic number.

242489347 is a deficient number, since it is larger than the sum of its proper divisors (7822269).

242489347 is an equidigital number, since it uses as much as digits as its factorization.

242489347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822268.

The product of its digits is 387072, while the sum is 43.

The square root of 242489347 is about 15572.0694514249. The cubic root of 242489347 is about 623.5877205907.

The spelling of 242489347 in words is "two hundred forty-two million, four hundred eighty-nine thousand, three hundred forty-seven".