42040313 has 4 divisors (see below), whose sum is σ = 48046080. Its totient is φ = 36034548.

The previous prime is 42040301. The next prime is 42040321. The reversal of 42040313 is 31304024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42040313 - 2⁶ = 42040249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42040291 and 42040300.

It is not an unprimeable number, because it can be changed into a prime (42040373) 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, 3002873 + ... + 3002886.

It is an arithmetic number, because the mean of its divisors is an integer number (12011520).

Almost surely, 2^42040313 is an apocalyptic number.

It is an amenable number.

42040313 is a deficient number, since it is larger than the sum of its proper divisors (6005767).

42040313 is an equidigital number, since it uses as much as digits as its factorization.

42040313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005766.

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

The square root of 42040313 is about 6483.8501679172. The cubic root of 42040313 is about 347.7138424668.

Adding to 42040313 its reverse (31304024), we get a palindrome (73344337).

The spelling of 42040313 in words is "forty-two million, forty thousand, three hundred thirteen".