124140161 has 2 divisors, whose sum is σ = 124140162. Its totient is φ = 124140160.

The previous prime is 124140139. The next prime is 124140173. The reversal of 124140161 is 161041421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 23338561 = 10040^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 124140161 - 2¹⁴ = 124123777 is a prime.

It is not a weakly prime, because it can be changed into another prime (124140101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62070080 + 62070081.

It is an arithmetic number, because the mean of its divisors is an integer number (62070081).

Almost surely, 2^124140161 is an apocalyptic number.

It is an amenable number.

124140161 is a deficient number, since it is larger than the sum of its proper divisors (1).

124140161 is an equidigital number, since it uses as much as digits as its factorization.

124140161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 124140161 is about 11141.8203629389. The cubic root of 124140161 is about 498.8509092037.

Adding to 124140161 its reverse (161041421), we get a palindrome (285181582).

The spelling of 124140161 in words is "one hundred twenty-four million, one hundred forty thousand, one hundred sixty-one".