42505315 has 8 divisors (see below), whose sum is σ = 52250688. Its totient is φ = 33174720.

The previous prime is 42505277. The next prime is 42505327. The reversal of 42505315 is 51350524.

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

It is not a de Polignac number, because 42505315 - 2⁷ = 42505187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42505315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103467 + ... + 103876.

It is an arithmetic number, because the mean of its divisors is an integer number (6531336).

Almost surely, 2^42505315 is an apocalyptic number.

42505315 is a deficient number, since it is larger than the sum of its proper divisors (9745373).

42505315 is a wasteful number, since it uses less digits than its factorization.

42505315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207389.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 42505315 is about 6519.6100343502. The cubic root of 42505315 is about 348.9911492735.

Adding to 42505315 its reverse (51350524), we get a palindrome (93855839).

The spelling of 42505315 in words is "forty-two million, five hundred five thousand, three hundred fifteen".