40581743 has 2 divisors, whose sum is σ = 40581744. Its totient is φ = 40581742.

The previous prime is 40581733. The next prime is 40581757. The reversal of 40581743 is 34718504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40581743 - 2⁶ = 40581679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40581733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20290871 + 20290872.

It is an arithmetic number, because the mean of its divisors is an integer number (20290872).

Almost surely, 2^40581743 is an apocalyptic number.

40581743 is a deficient number, since it is larger than the sum of its proper divisors (1).

40581743 is an equidigital number, since it uses as much as digits as its factorization.

40581743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40581743 is about 6370.3801299452. The cubic root of 40581743 is about 343.6451604031.

The spelling of 40581743 in words is "forty million, five hundred eighty-one thousand, seven hundred forty-three".