42739315 has 4 divisors (see below), whose sum is σ = 51287184. Its totient is φ = 34191448.

The previous prime is 42739259. The next prime is 42739321. The reversal of 42739315 is 51393724.

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

It is a cyclic number.

It is not a de Polignac number, because 42739315 - 2⁹ = 42738803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4273927 + ... + 4273936.

It is an arithmetic number, because the mean of its divisors is an integer number (12821796).

Almost surely, 2^42739315 is an apocalyptic number.

42739315 is a deficient number, since it is larger than the sum of its proper divisors (8547869).

42739315 is an equidigital number, since it uses as much as digits as its factorization.

42739315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547868.

The product of its digits is 22680, while the sum is 34.

The square root of 42739315 is about 6537.5312618755. The cubic root of 42739315 is about 349.6303989532.

The spelling of 42739315 in words is "forty-two million, seven hundred thirty-nine thousand, three hundred fifteen".