129563419 has 2 divisors, whose sum is σ = 129563420. Its totient is φ = 129563418.

The previous prime is 129563417. The next prime is 129563431. The reversal of 129563419 is 914365921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129563419 - 2¹ = 129563417 is a prime.

It is a super-2 number, since 2×129563419² = 33573359085939122, which contains 22 as substring.

Together with 129563417, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (129563417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64781709 + 64781710.

It is an arithmetic number, because the mean of its divisors is an integer number (64781710).

Almost surely, 2^129563419 is an apocalyptic number.

129563419 is a deficient number, since it is larger than the sum of its proper divisors (1).

129563419 is an equidigital number, since it uses as much as digits as its factorization.

129563419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 129563419 is about 11382.5928065621. The cubic root of 129563419 is about 506.0119811043.

The spelling of 129563419 in words is "one hundred twenty-nine million, five hundred sixty-three thousand, four hundred nineteen".