242649 has 32 divisors (see below), whose sum is σ = 422400. Its totient is φ = 136080.

The previous prime is 242647. The next prime is 242659. The reversal of 242649 is 946242.

242649 = 49³ + 50³.

It is not a de Polignac number, because 242649 - 2¹ = 242647 is a prime.

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

242649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (242647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5622 + ... + 5664.

It is an arithmetic number, because the mean of its divisors is an integer number (13200).

2²⁴²⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

242649 is a deficient number, since it is larger than the sum of its proper divisors (179751).

242649 is a wasteful number, since it uses less digits than its factorization.

242649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 76 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 242649 is about 492.5941534367. The cubic root of 242649 is about 62.3724545583.

The spelling of 242649 in words is "two hundred forty-two thousand, six hundred forty-nine".