161078123 has 2 divisors, whose sum is σ = 161078124. Its totient is φ = 161078122.

The previous prime is 161078081. The next prime is 161078153. The reversal of 161078123 is 321870161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161078123 - 2⁶ = 161078059 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (161078153) 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, 80539061 + 80539062.

It is an arithmetic number, because the mean of its divisors is an integer number (80539062).

Almost surely, 2^161078123 is an apocalyptic number.

161078123 is a deficient number, since it is larger than the sum of its proper divisors (1).

161078123 is an equidigital number, since it uses as much as digits as its factorization.

161078123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 161078123 is about 12691.6556445564. The cubic root of 161078123 is about 544.1001597494.

The spelling of 161078123 in words is "one hundred sixty-one million, seventy-eight thousand, one hundred twenty-three".