242401 has 4 divisors (see below), whose sum is σ = 243712. Its totient is φ = 241092.

The previous prime is 242399. The next prime is 242413. The reversal of 242401 is 104242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104242 = 2 ⋅52121.

It is a cyclic number.

It is not a de Polignac number, because 242401 - 2¹ = 242399 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (242441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321 + ... + 766.

It is an arithmetic number, because the mean of its divisors is an integer number (60928).

2²⁴²⁴⁰¹ is an apocalyptic number.

It is an amenable number.

242401 is a deficient number, since it is larger than the sum of its proper divisors (1311).

242401 is a wasteful number, since it uses less digits than its factorization.

242401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 242401 is about 492.3423605582. The cubic root of 242401 is about 62.3511980086.

Adding to 242401 its reverse (104242), we get a palindrome (346643).

The spelling of 242401 in words is "two hundred forty-two thousand, four hundred one", and thus it is an iban number.