42945937 has 8 divisors (see below), whose sum is σ = 44393576. Its totient is φ = 41513472.

The previous prime is 42945913. The next prime is 42945941. The reversal of 42945937 is 73954924.

42945937 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 4456321 + 38489616 = 2111^2 + 6204^2 .

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 42945937 - 2⁷ = 42945809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42945893 and 42945902.

It is not an unprimeable number, because it can be changed into a prime (42945977) 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 7 ways as a sum of consecutive naturals, for example, 2113 + ... + 9505.

It is an arithmetic number, because the mean of its divisors is an integer number (5549197).

Almost surely, 2^42945937 is an apocalyptic number.

It is an amenable number.

42945937 is a deficient number, since it is larger than the sum of its proper divisors (1447639).

42945937 is a wasteful number, since it uses less digits than its factorization.

42945937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587.

The product of its digits is 272160, while the sum is 43.

The square root of 42945937 is about 6553.3149626735. The cubic root of 42945937 is about 350.1929194939.

The spelling of 42945937 in words is "forty-two million, nine hundred forty-five thousand, nine hundred thirty-seven".