42251115 has 64 divisors (see below), whose sum is σ = 75479040. Its totient is φ = 20106240.

The previous prime is 42251113. The next prime is 42251119. The reversal of 42251115 is 51115224.

42251115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42251115 - 2¹ = 42251113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42251091 and 42251100.

It is not an unprimeable number, because it can be changed into a prime (42251113) 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 63 ways as a sum of consecutive naturals, for example, 410154 + ... + 410256.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^42251115 is an apocalyptic number.

42251115 is a deficient number, since it is larger than the sum of its proper divisors (33227925).

42251115 is a wasteful number, since it uses less digits than its factorization.

42251115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204.

The product of its digits is 400, while the sum is 21.

The square root of 42251115 is about 6500.0857686649. The cubic root of 42251115 is about 348.2940522287.

Adding to 42251115 its reverse (51115224), we get a palindrome (93366339).

The spelling of 42251115 in words is "forty-two million, two hundred fifty-one thousand, one hundred fifteen".