129145260 has 48 divisors (see below), whose sum is σ = 382880736. Its totient is φ = 32412672.

The previous prime is 129145213. The next prime is 129145267. The reversal of 129145260 is 62541921.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (129145267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62287 + ... + 64326.

It is an arithmetic number, because the mean of its divisors is an integer number (7976682).

Almost surely, 2^129145260 is an apocalyptic number.

129145260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129145260 is an abundant number, since it is smaller than the sum of its proper divisors (253735476).

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

129145260 is a wasteful number, since it uses less digits than its factorization.

129145260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126642 (or 126640 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 129145260 is about 11364.2096073594. The cubic root of 129145260 is about 505.4670188761.

The spelling of 129145260 in words is "one hundred twenty-nine million, one hundred forty-five thousand, two hundred sixty".