129245559 has 8 divisors (see below), whose sum is σ = 174034032. Its totient is φ = 85310400.

The previous prime is 129245549. The next prime is 129245563. The reversal of 129245559 is 955542921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129245559 - 2⁵ = 129245527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129245559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129245549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212974 + ... + 213579.

It is an arithmetic number, because the mean of its divisors is an integer number (21754254).

Almost surely, 2^129245559 is an apocalyptic number.

129245559 is a deficient number, since it is larger than the sum of its proper divisors (44788473).

129245559 is a wasteful number, since it uses less digits than its factorization.

129245559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426657.

The product of its digits is 162000, while the sum is 42.

The square root of 129245559 is about 11368.6216842676. The cubic root of 129245559 is about 505.5978398281.

The spelling of 129245559 in words is "one hundred twenty-nine million, two hundred forty-five thousand, five hundred fifty-nine".