402241 has 6 divisors (see below), whose sum is σ = 467970. Its totient is φ = 344736.

The previous prime is 402239. The next prime is 402253. The reversal of 402241 is 142204.

It can be written as a sum of positive squares in only one way, i.e., 254016 + 148225 = 504^2 + 385^2 .

It is not a de Polignac number, because 402241 - 2¹ = 402239 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (402221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4056 + ... + 4153.

It is an arithmetic number, because the mean of its divisors is an integer number (77995).

2⁴⁰²²⁴¹ is an apocalyptic number.

It is an amenable number.

402241 is a deficient number, since it is larger than the sum of its proper divisors (65729).

402241 is an equidigital number, since it uses as much as digits as its factorization.

402241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223 (or 8216 counting only the distinct ones).

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

The square root of 402241 is about 634.2247235799. The cubic root of 402241 is about 73.8179723808.

Adding to 402241 its reverse (142204), we get a palindrome (544445).

The spelling of 402241 in words is "four hundred two thousand, two hundred forty-one", and thus it is an iban number.