42135513 has 16 divisors (see below), whose sum is σ = 64496640. Its totient is φ = 23968656.

The previous prime is 42135497. The next prime is 42135523. The reversal of 42135513 is 31553124.

It is not a de Polignac number, because 42135513 - 2⁴ = 42135497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42135523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348 + ... + 9186.

It is an arithmetic number, because the mean of its divisors is an integer number (4031040).

Almost surely, 2^42135513 is an apocalyptic number.

It is an amenable number.

42135513 is a deficient number, since it is larger than the sum of its proper divisors (22361127).

42135513 is a wasteful number, since it uses less digits than its factorization.

42135513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9076.

The product of its digits is 1800, while the sum is 24.

The square root of 42135513 is about 6491.1873336085. The cubic root of 42135513 is about 347.9761098014.

Adding to 42135513 its reverse (31553124), we get a palindrome (73688637).

The spelling of 42135513 in words is "forty-two million, one hundred thirty-five thousand, five hundred thirteen".