40722943 has 2 divisors, whose sum is σ = 40722944. Its totient is φ = 40722942.

The previous prime is 40722937. The next prime is 40722959. The reversal of 40722943 is 34922704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40722943 - 2⁵ = 40722911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40722043) 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, 20361471 + 20361472.

It is an arithmetic number, because the mean of its divisors is an integer number (20361472).

Almost surely, 2^40722943 is an apocalyptic number.

40722943 is a deficient number, since it is larger than the sum of its proper divisors (1).

40722943 is an equidigital number, since it uses as much as digits as its factorization.

40722943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 40722943 is about 6381.4530477000. The cubic root of 40722943 is about 344.0432583738.

The spelling of 40722943 in words is "forty million, seven hundred twenty-two thousand, nine hundred forty-three".