42422515 has 8 divisors (see below), whose sum is σ = 51004368. Its totient is φ = 33873120.

The previous prime is 42422503. The next prime is 42422519. The reversal of 42422515 is 51522424.

42422515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42422515 - 2¹¹ = 42420467 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 42422515.

It is not an unprimeable number, because it can be changed into a prime (42422519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5137 + ... + 10546.

It is an arithmetic number, because the mean of its divisors is an integer number (6375546).

Almost surely, 2^42422515 is an apocalyptic number.

42422515 is a deficient number, since it is larger than the sum of its proper divisors (8581853).

42422515 is a wasteful number, since it uses less digits than its factorization.

42422515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16229.

The product of its digits is 3200, while the sum is 25.

The square root of 42422515 is about 6513.2568658084. The cubic root of 42422515 is about 348.7643913504.

Adding to 42422515 its reverse (51522424), we get a palindrome (93944939).

Subtracting 42422515 from its reverse (51522424), we obtain a palindrome (9099909).

The spelling of 42422515 in words is "forty-two million, four hundred twenty-two thousand, five hundred fifteen".