40612543 has 2 divisors, whose sum is σ = 40612544. Its totient is φ = 40612542.

The previous prime is 40612531. The next prime is 40612547. The reversal of 40612543 is 34521604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40612543 - 2²¹ = 38515391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40612547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20306271 + 20306272.

It is an arithmetic number, because the mean of its divisors is an integer number (20306272).

Almost surely, 2^40612543 is an apocalyptic number.

40612543 is a deficient number, since it is larger than the sum of its proper divisors (1).

40612543 is an equidigital number, since it uses as much as digits as its factorization.

40612543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 40612543 is about 6372.7971095901. The cubic root of 40612543 is about 343.7320762886.

The spelling of 40612543 in words is "forty million, six hundred twelve thousand, five hundred forty-three".