124138291231 has 2 divisors, whose sum is σ = 124138291232. Its totient is φ = 124138291230.

The previous prime is 124138291223. The next prime is 124138291243. The reversal of 124138291231 is 132192831421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 124138291231 - 2³ = 124138291223 is a prime.

It is a super-2 number, since 2×124138291231² (a number of 23 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124138291271) 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, 62069145615 + 62069145616.

It is an arithmetic number, because the mean of its divisors is an integer number (62069145616).

Almost surely, 2^124138291231 is an apocalyptic number.

124138291231 is a deficient number, since it is larger than the sum of its proper divisors (1).

124138291231 is an equidigital number, since it uses as much as digits as its factorization.

124138291231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 37.

The spelling of 124138291231 in words is "one hundred twenty-four billion, one hundred thirty-eight million, two hundred ninety-one thousand, two hundred thirty-one".