42322013 has 4 divisors (see below), whose sum is σ = 42361020. Its totient is φ = 42283008.

The previous prime is 42321997. The next prime is 42322067. The reversal of 42322013 is 31022324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5026564 + 37295449 = 2242^2 + 6107^2 .

It is a cyclic number.

It is not a de Polignac number, because 42322013 - 2⁴ = 42321997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42321982 and 42322000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42322213) 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, 17828 + ... + 20061.

It is an arithmetic number, because the mean of its divisors is an integer number (10590255).

Almost surely, 2^42322013 is an apocalyptic number.

It is an amenable number.

42322013 is a deficient number, since it is larger than the sum of its proper divisors (39007).

42322013 is a wasteful number, since it uses less digits than its factorization.

42322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39006.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 42322013 is about 6505.5371031145. The cubic root of 42322013 is about 348.4887575648.

Adding to 42322013 its reverse (31022324), we get a palindrome (73344337).

The spelling of 42322013 in words is "forty-two million, three hundred twenty-two thousand, thirteen".