42512115 has 16 divisors (see below), whose sum is σ = 70365600. Its totient is φ = 21891072.

The previous prime is 42512089. The next prime is 42512123. The reversal of 42512115 is 51121524.

It is not a de Polignac number, because 42512115 - 2⁵ = 42512083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42512091 and 42512100.

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, 48430 + ... + 49299.

It is an arithmetic number, because the mean of its divisors is an integer number (4397850).

Almost surely, 2^42512115 is an apocalyptic number.

42512115 is a deficient number, since it is larger than the sum of its proper divisors (27853485).

42512115 is a wasteful number, since it uses less digits than its factorization.

42512115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97766.

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

The square root of 42512115 is about 6520.1315170785. The cubic root of 42512115 is about 349.0097588150.

Adding to 42512115 its reverse (51121524), we get a palindrome (93633639).

The spelling of 42512115 in words is "forty-two million, five hundred twelve thousand, one hundred fifteen".