164140043 has 2 divisors, whose sum is σ = 164140044. Its totient is φ = 164140042.

The previous prime is 164140037. The next prime is 164140051. The reversal of 164140043 is 340041461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164140043 - 2¹⁶ = 164074507 is a prime.

It is not a weakly prime, because it can be changed into another prime (164140063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82070021 + 82070022.

It is an arithmetic number, because the mean of its divisors is an integer number (82070022).

Almost surely, 2^164140043 is an apocalyptic number.

164140043 is a deficient number, since it is larger than the sum of its proper divisors (1).

164140043 is an equidigital number, since it uses as much as digits as its factorization.

164140043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 164140043 is about 12811.7150686393. The cubic root of 164140043 is about 547.5261267878.

The spelling of 164140043 in words is "one hundred sixty-four million, one hundred forty thousand, forty-three".