42317340 has 96 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 10327296.

The previous prime is 42317339. The next prime is 42317383. The reversal of 42317340 is 4371324.

It is a self number, because there is not a number n which added to its sum of digits gives 42317340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176941 + ... + 177179.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^42317340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42317340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64350720).

42317340 is an abundant number, since it is smaller than the sum of its proper divisors (86384100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42317340 is a wasteful number, since it uses less digits than its factorization.

42317340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 489 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 42317340 is about 6505.1779376125. The cubic root of 42317340 is about 348.4759309230.

Adding to 42317340 its reverse (4371324), we get a palindrome (46688664).

The spelling of 42317340 in words is "forty-two million, three hundred seventeen thousand, three hundred forty".