42481321 has 4 divisors (see below), whose sum is σ = 44717200. Its totient is φ = 40245444.

The previous prime is 42481297. The next prime is 42481331. The reversal of 42481321 is 12318424.

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.

It is a cyclic number.

It is not a de Polignac number, because 42481321 - 2²³ = 34092713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42481331) 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, 1117911 + ... + 1117948.

It is an arithmetic number, because the mean of its divisors is an integer number (11179300).

Almost surely, 2^42481321 is an apocalyptic number.

It is an amenable number.

42481321 is a deficient number, since it is larger than the sum of its proper divisors (2235879).

42481321 is a wasteful number, since it uses less digits than its factorization.

42481321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2235878.

The product of its digits is 1536, while the sum is 25.

The square root of 42481321 is about 6517.7696338548. The cubic root of 42481321 is about 348.9254690971.

Adding to 42481321 its reverse (12318424), we get a palindrome (54799745).

The spelling of 42481321 in words is "forty-two million, four hundred eighty-one thousand, three hundred twenty-one".