42397345 has 8 divisors (see below), whose sum is σ = 50913576. Its totient is φ = 33893376.

The previous prime is 42397339. The next prime is 42397357. The reversal of 42397345 is 54379324.

42397345 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 4 ways, for example, as 717409 + 41679936 = 847^2 + 6456^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42397345 - 2¹³ = 42389153 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8559 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (6364197).

Almost surely, 2^42397345 is an apocalyptic number.

It is an amenable number.

42397345 is a deficient number, since it is larger than the sum of its proper divisors (8516231).

42397345 is a wasteful number, since it uses less digits than its factorization.

42397345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131.

The product of its digits is 90720, while the sum is 37.

The square root of 42397345 is about 6511.3243660564. The cubic root of 42397345 is about 348.6954017551.

The spelling of 42397345 in words is "forty-two million, three hundred ninety-seven thousand, three hundred forty-five".