42507313 has 8 divisors (see below), whose sum is σ = 44813120. Its totient is φ = 40208400.

The previous prime is 42507299. The next prime is 42507319. The reversal of 42507313 is 31370524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42507313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42507319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15388 + ... + 17938.

It is an arithmetic number, because the mean of its divisors is an integer number (5601640).

Almost surely, 2^42507313 is an apocalyptic number.

It is an amenable number.

42507313 is a deficient number, since it is larger than the sum of its proper divisors (2305807).

42507313 is a wasteful number, since it uses less digits than its factorization.

42507313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 42507313 is about 6519.7632625733. The cubic root of 42507313 is about 348.9966174006.

Adding to 42507313 its reverse (31370524), we get a palindrome (73877837).

The spelling of 42507313 in words is "forty-two million, five hundred seven thousand, three hundred thirteen".