42540315 has 16 divisors (see below), whose sum is σ = 68928000. Its totient is φ = 22400352.

The previous prime is 42540293. The next prime is 42540331. The reversal of 42540315 is 51304524.

It is not a de Polignac number, because 42540315 - 2⁵ = 42540283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16765 + ... + 19134.

It is an arithmetic number, because the mean of its divisors is an integer number (4308000).

Almost surely, 2^42540315 is an apocalyptic number.

42540315 is a deficient number, since it is larger than the sum of its proper divisors (26387685).

42540315 is a wasteful number, since it uses less digits than its factorization.

42540315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35986.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42540315 is about 6522.2936916395. The cubic root of 42540315 is about 349.0869125063.

Adding to 42540315 its reverse (51304524), we get a palindrome (93844839).

The spelling of 42540315 in words is "forty-two million, five hundred forty thousand, three hundred fifteen".