42481513 has 8 divisors (see below), whose sum is σ = 43724168. Its totient is φ = 41243904.

The previous prime is 42481507. The next prime is 42481519. The reversal of 42481513 is 31518424.

It is an interprime number because it is at equal distance from previous prime (42481507) and next prime (42481519).

It can be written as a sum of positive squares in 4 ways, for example, as 127449 + 42354064 = 357^2 + 6508^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42481513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42481519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21745 + ... + 23617.

It is an arithmetic number, because the mean of its divisors is an integer number (5465521).

Almost surely, 2^42481513 is an apocalyptic number.

It is an amenable number.

42481513 is a deficient number, since it is larger than the sum of its proper divisors (1242655).

42481513 is a wasteful number, since it uses less digits than its factorization.

42481513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523.

The product of its digits is 3840, while the sum is 28.

The square root of 42481513 is about 6517.7843628031. The cubic root of 42481513 is about 348.9259947680.

Adding to 42481513 its reverse (31518424), we get a palindrome (73999937).

The spelling of 42481513 in words is "forty-two million, four hundred eighty-one thousand, five hundred thirteen".