42481331 has 2 divisors, whose sum is σ = 42481332. Its totient is φ = 42481330.

The previous prime is 42481297. The next prime is 42481337. The reversal of 42481331 is 13318424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42481331 - 2⁶ = 42481267 is a prime.

It is a super-2 number, since 2×42481331² = 3609326967063122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42481331.

It is not a weakly prime, because it can be changed into another prime (42481337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21240665 + 21240666.

It is an arithmetic number, because the mean of its divisors is an integer number (21240666).

Almost surely, 2^42481331 is an apocalyptic number.

42481331 is a deficient number, since it is larger than the sum of its proper divisors (1).

42481331 is an equidigital number, since it uses as much as digits as its factorization.

42481331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 26.

The square root of 42481331 is about 6517.7704009884. The cubic root of 42481331 is about 348.9254964758.

Adding to 42481331 its reverse (13318424), we get a palindrome (55799755).

The spelling of 42481331 in words is "forty-two million, four hundred eighty-one thousand, three hundred thirty-one".