403242281 has 12 divisors (see below), whose sum is σ = 445946112. Its totient is φ = 364296816.

The previous prime is 403242271. The next prime is 403242283. The reversal of 403242281 is 182242304.

It is a de Polignac number, because none of the positive numbers 2^k-403242281 is a prime.

It is a super-2 number, since 2×403242281² = 325208674372165922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 403242281.

It is not an unprimeable number, because it can be changed into a prime (403242283) 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 11 ways as a sum of consecutive naturals, for example, 17441 + ... + 33326.

It is an arithmetic number, because the mean of its divisors is an integer number (37162176).

Almost surely, 2^403242281 is an apocalyptic number.

It is an amenable number.

403242281 is a deficient number, since it is larger than the sum of its proper divisors (42703831).

403242281 is a wasteful number, since it uses less digits than its factorization.

403242281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50840 (or 50827 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 403242281 is about 20080.8934313192. The cubic root of 403242281 is about 738.7917224917.

Adding to 403242281 its reverse (182242304), we get a palindrome (585484585).

The spelling of 403242281 in words is "four hundred three million, two hundred forty-two thousand, two hundred eighty-one".