42906843 has 12 divisors (see below), whose sum is σ = 70830448. Its totient is φ = 24518160.

The previous prime is 42906841. The next prime is 42906847. The reversal of 42906843 is 34860924.

It is a happy number.

It is not a de Polignac number, because 42906843 - 2¹ = 42906841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42906798 and 42906807.

It is not an unprimeable number, because it can be changed into a prime (42906841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340468 + ... + 340593.

Almost surely, 2^42906843 is an apocalyptic number.

42906843 is a deficient number, since it is larger than the sum of its proper divisors (27923605).

42906843 is a wasteful number, since it uses less digits than its factorization.

42906843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681074 (or 681071 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 42906843 is about 6550.3315183279. The cubic root of 42906843 is about 350.0866261770.

The spelling of 42906843 in words is "forty-two million, nine hundred six thousand, eight hundred forty-three".