42513322 has 4 divisors (see below), whose sum is σ = 63769986. Its totient is φ = 21256660.

The previous prime is 42513319. The next prime is 42513323. The reversal of 42513322 is 22331524.

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

It can be written as a sum of positive squares in only one way, i.e., 39050001 + 3463321 = 6249^2 + 1861^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42513293 and 42513302.

It is not an unprimeable number, because it can be changed into a prime (42513323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10628329 + ... + 10628332.

Almost surely, 2^42513322 is an apocalyptic number.

42513322 is a deficient number, since it is larger than the sum of its proper divisors (21256664).

42513322 is a wasteful number, since it uses less digits than its factorization.

42513322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21256663.

The product of its digits is 1440, while the sum is 22.

The square root of 42513322 is about 6520.2240759041. The cubic root of 42513322 is about 349.0130618013.

Adding to 42513322 its reverse (22331524), we get a palindrome (64844846).

The spelling of 42513322 in words is "forty-two million, five hundred thirteen thousand, three hundred twenty-two".