42317397 has 20 divisors (see below), whose sum is σ = 63808140. Its totient is φ = 27946944.

The previous prime is 42317383. The next prime is 42317399. The reversal of 42317397 is 79371324.

42317397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 33281361 + 9036036 = 5769^2 + 3006^2 .

It is not a de Polignac number, because 42317397 - 2⁷ = 42317269 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42317399) 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 19 ways as a sum of consecutive naturals, for example, 6433 + ... + 11225.

It is an arithmetic number, because the mean of its divisors is an integer number (3190407).

Almost surely, 2^42317397 is an apocalyptic number.

It is an amenable number.

42317397 is a deficient number, since it is larger than the sum of its proper divisors (21490743).

42317397 is a wasteful number, since it uses less digits than its factorization.

42317397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4914 (or 4905 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 42317397 is about 6505.1823187363. The cubic root of 42317397 is about 348.4760873846.

It can be divided in two parts, 4231 and 7397, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 42317397 in words is "forty-two million, three hundred seventeen thousand, three hundred ninety-seven".