42517235 has 4 divisors (see below), whose sum is σ = 51020688. Its totient is φ = 34013784.

The previous prime is 42517217. The next prime is 42517243. The reversal of 42517235 is 53271524.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42517235 - 2¹⁰ = 42516211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42517198 and 42517207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4251719 + ... + 4251728.

It is an arithmetic number, because the mean of its divisors is an integer number (12755172).

Almost surely, 2^42517235 is an apocalyptic number.

42517235 is a deficient number, since it is larger than the sum of its proper divisors (8503453).

42517235 is an equidigital number, since it uses as much as digits as its factorization.

42517235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8503452.

The product of its digits is 8400, while the sum is 29.

The square root of 42517235 is about 6520.5241353744. The cubic root of 42517235 is about 349.0237693956.

Adding to 42517235 its reverse (53271524), we get a palindrome (95788759).

The spelling of 42517235 in words is "forty-two million, five hundred seventeen thousand, two hundred thirty-five".