124717129 has 2 divisors, whose sum is σ = 124717130. Its totient is φ = 124717128.

The previous prime is 124717127. The next prime is 124717133. The reversal of 124717129 is 921717421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114982729 + 9734400 = 10723^2 + 3120^2 .

It is a cyclic number.

It is not a de Polignac number, because 124717129 - 2¹ = 124717127 is a prime.

Together with 124717127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 124717094 and 124717103.

It is not a weakly prime, because it can be changed into another prime (124717127) 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, 62358564 + 62358565.

It is an arithmetic number, because the mean of its divisors is an integer number (62358565).

Almost surely, 2^124717129 is an apocalyptic number.

It is an amenable number.

124717129 is a deficient number, since it is larger than the sum of its proper divisors (1).

124717129 is an equidigital number, since it uses as much as digits as its factorization.

124717129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 34.

The square root of 124717129 is about 11167.6823468435. The cubic root of 124717129 is about 499.6225538071.

It can be divided in two parts, 12471 and 7129, that added together give a square (19600 = 140²).

The spelling of 124717129 in words is "one hundred twenty-four million, seven hundred seventeen thousand, one hundred twenty-nine".