129248533 has 2 divisors, whose sum is σ = 129248534. Its totient is φ = 129248532.

The previous prime is 129248531. The next prime is 129248557. The reversal of 129248533 is 335842921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96963409 + 32285124 = 9847^2 + 5682^2 .

It is a cyclic number.

It is not a de Polignac number, because 129248533 - 2¹ = 129248531 is a prime.

Together with 129248531, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 129248492 and 129248501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129248531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64624266 + 64624267.

It is an arithmetic number, because the mean of its divisors is an integer number (64624267).

Almost surely, 2^129248533 is an apocalyptic number.

It is an amenable number.

129248533 is a deficient number, since it is larger than the sum of its proper divisors (1).

129248533 is an equidigital number, since it uses as much as digits as its factorization.

129248533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 129248533 is about 11368.7524821328. The cubic root of 129248533 is about 505.6017178116.

The spelling of 129248533 in words is "one hundred twenty-nine million, two hundred forty-eight thousand, five hundred thirty-three".