42004313 has 4 divisors (see below), whose sum is σ = 45235428. Its totient is φ = 38773200.

The previous prime is 42004309. The next prime is 42004321. The reversal of 42004313 is 31340024.

42004313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 14462809 + 27541504 = 3803^2 + 5248^2 .

It is a cyclic number.

It is not a de Polignac number, because 42004313 - 2² = 42004309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42004291 and 42004300.

It is not an unprimeable number, because it can be changed into a prime (42004343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1615538 + ... + 1615563.

It is an arithmetic number, because the mean of its divisors is an integer number (11308857).

Almost surely, 2^42004313 is an apocalyptic number.

It is an amenable number.

42004313 is a deficient number, since it is larger than the sum of its proper divisors (3231115).

42004313 is a wasteful number, since it uses less digits than its factorization.

42004313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231114.

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

The square root of 42004313 is about 6481.0734450398. The cubic root of 42004313 is about 347.6145625758.

Adding to 42004313 its reverse (31340024), we get a palindrome (73344337).

The spelling of 42004313 in words is "forty-two million, four thousand, three hundred thirteen".