42321315 has 8 divisors (see below), whose sum is σ = 67714128. Its totient is φ = 22571360.

The previous prime is 42321289. The next prime is 42321319. The reversal of 42321315 is 51312324.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42321315 - 2⁵ = 42321283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42321291 and 42321300.

It is not an unprimeable number, because it can be changed into a prime (42321319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1410696 + ... + 1410725.

It is an arithmetic number, because the mean of its divisors is an integer number (8464266).

Almost surely, 2^42321315 is an apocalyptic number.

42321315 is a deficient number, since it is larger than the sum of its proper divisors (25392813).

42321315 is a wasteful number, since it uses less digits than its factorization.

42321315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821429.

The product of its digits is 720, while the sum is 21.

The square root of 42321315 is about 6505.4834562852. The cubic root of 42321315 is about 348.4868417258.

Adding to 42321315 its reverse (51312324), we get a palindrome (93633639).

The spelling of 42321315 in words is "forty-two million, three hundred twenty-one thousand, three hundred fifteen".