161244043 has 2 divisors, whose sum is σ = 161244044. Its totient is φ = 161244042.

The previous prime is 161244037. The next prime is 161244047. The reversal of 161244043 is 340442161.

161244043 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161244043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161243999 and 161244017.

It is not a weakly prime, because it can be changed into another prime (161244047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80622021 + 80622022.

It is an arithmetic number, because the mean of its divisors is an integer number (80622022).

Almost surely, 2^161244043 is an apocalyptic number.

161244043 is a deficient number, since it is larger than the sum of its proper divisors (1).

161244043 is an equidigital number, since it uses as much as digits as its factorization.

161244043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 161244043 is about 12698.1905403880. The cubic root of 161244043 is about 544.2869140970.

The spelling of 161244043 in words is "one hundred sixty-one million, two hundred forty-four thousand, forty-three".