124251072181 has 2 divisors, whose sum is σ = 124251072182. Its totient is φ = 124251072180.

The previous prime is 124251072163. The next prime is 124251072241. The reversal of 124251072181 is 181270152421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98661951025 + 25589121156 = 314105^2 + 159966^2 .

It is a cyclic number.

It is not a de Polignac number, because 124251072181 - 2⁷ = 124251072053 is a prime.

It is a super-2 number, since 2×124251072181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124251079181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62125536090 + 62125536091.

It is an arithmetic number, because the mean of its divisors is an integer number (62125536091).

Almost surely, 2^124251072181 is an apocalyptic number.

It is an amenable number.

124251072181 is a deficient number, since it is larger than the sum of its proper divisors (1).

124251072181 is an equidigital number, since it uses as much as digits as its factorization.

124251072181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 34.

The spelling of 124251072181 in words is "one hundred twenty-four billion, two hundred fifty-one million, seventy-two thousand, one hundred eighty-one".