42870513 has 16 divisors (see below), whose sum is σ = 65940480. Its totient is φ = 24267216.

The previous prime is 42870493. The next prime is 42870547. The reversal of 42870513 is 31507824.

42870513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42870513 - 2⁶ = 42870449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42870313) 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 15 ways as a sum of consecutive naturals, for example, 7293 + ... + 11786.

It is an arithmetic number, because the mean of its divisors is an integer number (4121280).

Almost surely, 2^42870513 is an apocalyptic number.

It is an amenable number.

42870513 is a deficient number, since it is larger than the sum of its proper divisors (23069967).

42870513 is a wasteful number, since it uses less digits than its factorization.

42870513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19196.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 42870513 is about 6547.5577889775. The cubic root of 42870513 is about 349.9877900502.

The spelling of 42870513 in words is "forty-two million, eight hundred seventy thousand, five hundred thirteen".