42481757 has 2 divisors, whose sum is σ = 42481758. Its totient is φ = 42481756.

The previous prime is 42481753. The next prime is 42481763. The reversal of 42481757 is 75718424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25745476 + 16736281 = 5074^2 + 4091^2 .

It is a cyclic number.

It is not a de Polignac number, because 42481757 - 2² = 42481753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42481757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42481753) 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 as a sum of consecutive naturals, namely, 21240878 + 21240879.

It is an arithmetic number, because the mean of its divisors is an integer number (21240879).

Almost surely, 2^42481757 is an apocalyptic number.

It is an amenable number.

42481757 is a deficient number, since it is larger than the sum of its proper divisors (1).

42481757 is an equidigital number, since it uses as much as digits as its factorization.

42481757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 38.

The square root of 42481757 is about 6517.8030807934. The cubic root of 42481757 is about 348.9266628059.

The spelling of 42481757 in words is "forty-two million, four hundred eighty-one thousand, seven hundred fifty-seven".