123932161 has 2 divisors, whose sum is σ = 123932162. Its totient is φ = 123932160.

The previous prime is 123932153. The next prime is 123932177. The reversal of 123932161 is 161239321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86490000 + 37442161 = 9300^2 + 6119^2 .

It is a cyclic number.

It is not a de Polignac number, because 123932161 - 2³ = 123932153 is a prime.

It is equal to p_7052815 and since 123932161 and 7052815 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (123932191) 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, 61966080 + 61966081.

It is an arithmetic number, because the mean of its divisors is an integer number (61966081).

Almost surely, 2^123932161 is an apocalyptic number.

It is an amenable number.

123932161 is a deficient number, since it is larger than the sum of its proper divisors (1).

123932161 is an equidigital number, since it uses as much as digits as its factorization.

123932161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 123932161 is about 11132.4822479086. The cubic root of 123932161 is about 498.5721409854.

The spelling of 123932161 in words is "one hundred twenty-three million, nine hundred thirty-two thousand, one hundred sixty-one".