42424515 has 24 divisors (see below), whose sum is σ = 84041568. Its totient is φ = 19393920.

The previous prime is 42424483. The next prime is 42424517. The reversal of 42424515 is 51542424.

It is not a de Polignac number, because 42424515 - 2⁵ = 42424483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42424517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67026 + ... + 67655.

It is an arithmetic number, because the mean of its divisors is an integer number (3501732).

Almost surely, 2^42424515 is an apocalyptic number.

42424515 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42424515 is a deficient number, since it is larger than the sum of its proper divisors (41617053).

42424515 is a wasteful number, since it uses less digits than its factorization.

42424515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134699 (or 134696 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 42424515 is about 6513.4103970194. The cubic root of 42424515 is about 348.7698720707.

Adding to 42424515 its reverse (51542424), we get a palindrome (93966939).

The spelling of 42424515 in words is "forty-two million, four hundred twenty-four thousand, five hundred fifteen".