40906543 has 8 divisors (see below), whose sum is σ = 41380976. Its totient is φ = 40435200.

The previous prime is 40906519. The next prime is 40906583. The reversal of 40906543 is 34560904.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40906543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40906583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34348 + ... + 35518.

It is an arithmetic number, because the mean of its divisors is an integer number (5172622).

Almost surely, 2^40906543 is an apocalyptic number.

40906543 is a deficient number, since it is larger than the sum of its proper divisors (474433).

40906543 is a wasteful number, since it uses less digits than its factorization.

40906543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40906543 is about 6395.8223083510. The cubic root of 40906543 is about 344.5595246834.

The spelling of 40906543 in words is "forty million, nine hundred six thousand, five hundred forty-three".