42287513 has 4 divisors (see below), whose sum is σ = 42866868. Its totient is φ = 41708160.

The previous prime is 42287489. The next prime is 42287537. The reversal of 42287513 is 31578224.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42287489) and next prime (42287537).

It can be written as a sum of positive squares in 2 ways, for example, as 35485849 + 6801664 = 5957^2 + 2608^2 .

It is a cyclic number.

It is not a de Polignac number, because 42287513 - 2⁸ = 42287257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42287513.

It is not an unprimeable number, because it can be changed into a prime (42287563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289568 + ... + 289713.

It is an arithmetic number, because the mean of its divisors is an integer number (10716717).

Almost surely, 2^42287513 is an apocalyptic number.

It is an amenable number.

42287513 is a deficient number, since it is larger than the sum of its proper divisors (579355).

42287513 is an equidigital number, since it uses as much as digits as its factorization.

42287513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579354.

The product of its digits is 13440, while the sum is 32.

The square root of 42287513 is about 6502.8849751476. The cubic root of 42287513 is about 348.3940382947.

The spelling of 42287513 in words is "forty-two million, two hundred eighty-seven thousand, five hundred thirteen".