161242063 has 2 divisors, whose sum is σ = 161242064. Its totient is φ = 161242062.

The previous prime is 161242049. The next prime is 161242069. The reversal of 161242063 is 360242161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161242063 - 2¹³ = 161233871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161242069) 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, 80621031 + 80621032.

It is an arithmetic number, because the mean of its divisors is an integer number (80621032).

Almost surely, 2^161242063 is an apocalyptic number.

161242063 is a deficient number, since it is larger than the sum of its proper divisors (1).

161242063 is an equidigital number, since it uses as much as digits as its factorization.

161242063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 161242063 is about 12698.1125762847. The cubic root of 161242063 is about 544.2846862266.

The spelling of 161242063 in words is "one hundred sixty-one million, two hundred forty-two thousand, sixty-three".