40056743 has 16 divisors (see below), whose sum is σ = 45308160. Its totient is φ = 35212800.

The previous prime is 40056739. The next prime is 40056749. The reversal of 40056743 is 34765004.

It is a cyclic number.

It is not a de Polignac number, because 40056743 - 2² = 40056739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40056749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13973 + ... + 16593.

It is an arithmetic number, because the mean of its divisors is an integer number (2831760).

Almost surely, 2^40056743 is an apocalyptic number.

40056743 is a deficient number, since it is larger than the sum of its proper divisors (5251417).

40056743 is a wasteful number, since it uses less digits than its factorization.

40056743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 40056743 is about 6329.0396585896. The cubic root of 40056743 is about 342.1568282024.

The spelling of 40056743 in words is "forty million, fifty-six thousand, seven hundred forty-three".