142005513 has 32 divisors (see below), whose sum is σ = 213498880. Its totient is φ = 83358720.

The previous prime is 142005503. The next prime is 142005517. The reversal of 142005513 is 315500241.

It is not a de Polignac number, because 142005513 - 2⁵ = 142005481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142005513.

It is not an unprimeable number, because it can be changed into a prime (142005517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87453 + ... + 89061.

It is an arithmetic number, because the mean of its divisors is an integer number (6671840).

Almost surely, 2^142005513 is an apocalyptic number.

142005513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

142005513 is a deficient number, since it is larger than the sum of its proper divisors (71493367).

142005513 is a wasteful number, since it uses less digits than its factorization.

142005513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 142005513 is about 11916.6066059093. The cubic root of 142005513 is about 521.7170961579.

Adding to 142005513 its reverse (315500241), we get a palindrome (457505754).

The spelling of 142005513 in words is "one hundred forty-two million, five thousand, five hundred thirteen".