42513371 has 4 divisors (see below), whose sum is σ = 42543744. Its totient is φ = 42483000.

The previous prime is 42513349. The next prime is 42513397. The reversal of 42513371 is 17331524.

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 42513371 - 2¹⁸ = 42251227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42513371.

It is not an unprimeable number, because it can be changed into a prime (42513301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12980 + ... + 15921.

It is an arithmetic number, because the mean of its divisors is an integer number (10635936).

Almost surely, 2^42513371 is an apocalyptic number.

42513371 is a deficient number, since it is larger than the sum of its proper divisors (30373).

42513371 is a wasteful number, since it uses less digits than its factorization.

42513371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30372.

The product of its digits is 2520, while the sum is 26.

The square root of 42513371 is about 6520.2278334426. The cubic root of 42513371 is about 349.0131958897.

Adding to 42513371 its reverse (17331524), we get a palindrome (59844895).

The spelling of 42513371 in words is "forty-two million, five hundred thirteen thousand, three hundred seventy-one".