40520843 has 12 divisors (see below), whose sum is σ = 47161800. Its totient is φ = 34668480.

The previous prime is 40520839. The next prime is 40520861. The reversal of 40520843 is 34802504.

It is not a de Polignac number, because 40520843 - 2² = 40520839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40520873) 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, 7793 + ... + 11906.

It is an arithmetic number, because the mean of its divisors is an integer number (3930150).

Almost surely, 2^40520843 is an apocalyptic number.

40520843 is a deficient number, since it is larger than the sum of its proper divisors (6640957).

40520843 is a wasteful number, since it uses less digits than its factorization.

40520843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19738 (or 19727 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40520843 is about 6365.5984007790. The cubic root of 40520843 is about 343.4731744626.

The spelling of 40520843 in words is "forty million, five hundred twenty thousand, eight hundred forty-three".