42642215 has 24 divisors (see below), whose sum is σ = 64286880. Its totient is φ = 26579520.

The previous prime is 42642179. The next prime is 42642247. The reversal of 42642215 is 51224624.

42642215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-42642215 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 800 + ... + 9269.

It is an arithmetic number, because the mean of its divisors is an integer number (2678620).

Almost surely, 2^42642215 is an apocalyptic number.

42642215 is a deficient number, since it is larger than the sum of its proper divisors (21644665).

42642215 is a wasteful number, since it uses less digits than its factorization.

42642215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10103 (or 10092 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 42642215 is about 6530.1006883508. The cubic root of 42642215 is about 349.3654215817.

Adding to 42642215 its reverse (51224624), we get a palindrome (93866839).

The spelling of 42642215 in words is "forty-two million, six hundred forty-two thousand, two hundred fifteen".