129113526 has 16 divisors (see below), whose sum is σ = 259567344. Its totient is φ = 42814464.

The previous prime is 129113519. The next prime is 129113527. The reversal of 129113526 is 625311921.

It is a junction number, because it is equal to n+sod(n) for n = 129113493 and 129113502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129113527) 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, 54591 + ... + 56906.

It is an arithmetic number, because the mean of its divisors is an integer number (16222959).

Almost surely, 2^129113526 is an apocalyptic number.

129113526 is an abundant number, since it is smaller than the sum of its proper divisors (130453818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129113526 is a wasteful number, since it uses less digits than its factorization.

129113526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111695.

The product of its digits is 3240, while the sum is 30.

The square root of 129113526 is about 11362.8132960108. The cubic root of 129113526 is about 505.4256138091.

The spelling of 129113526 in words is "one hundred twenty-nine million, one hundred thirteen thousand, five hundred twenty-six".