130857029 has 2 divisors, whose sum is σ = 130857030. Its totient is φ = 130857028.

The previous prime is 130857011. The next prime is 130857031. The reversal of 130857029 is 920758031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130484929 + 372100 = 11423^2 + 610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130857029 is a prime.

Together with 130857031, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130857029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130857059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65428514 + 65428515.

It is an arithmetic number, because the mean of its divisors is an integer number (65428515).

Almost surely, 2^130857029 is an apocalyptic number.

It is an amenable number.

130857029 is a deficient number, since it is larger than the sum of its proper divisors (1).

130857029 is an equidigital number, since it uses as much as digits as its factorization.

130857029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 130857029 is about 11439.2757200795. The cubic root of 130857029 is about 507.6904786218.

The spelling of 130857029 in words is "one hundred thirty million, eight hundred fifty-seven thousand, twenty-nine".