42842315 has 4 divisors (see below), whose sum is σ = 51410784. Its totient is φ = 34273848.

The previous prime is 42842311. The next prime is 42842339. The reversal of 42842315 is 51324824.

It is a happy number.

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 42842315 - 2² = 42842311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42842311) 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, 4284227 + ... + 4284236.

It is an arithmetic number, because the mean of its divisors is an integer number (12852696).

Almost surely, 2^42842315 is an apocalyptic number.

42842315 is a deficient number, since it is larger than the sum of its proper divisors (8568469).

42842315 is an equidigital number, since it uses as much as digits as its factorization.

42842315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8568468.

The product of its digits is 7680, while the sum is 29.

The square root of 42842315 is about 6545.4041128108. The cubic root of 42842315 is about 349.9110386146.

The spelling of 42842315 in words is "forty-two million, eight hundred forty-two thousand, three hundred fifteen".