129005962 has 16 divisors (see below), whose sum is σ = 205414920. Its totient is φ = 60553728.

The previous prime is 129005957. The next prime is 129005963. The reversal of 129005962 is 269500921.

It can be written as a sum of positive squares in 4 ways, for example, as 125238481 + 3767481 = 11191^2 + 1941^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (129005963) 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, 9268 + ... + 18544.

Almost surely, 2^129005962 is an apocalyptic number.

129005962 is a deficient number, since it is larger than the sum of its proper divisors (76408958).

129005962 is a wasteful number, since it uses less digits than its factorization.

129005962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 129005962 is about 11358.0791509832. The cubic root of 129005962 is about 505.2852187458.

The spelling of 129005962 in words is "one hundred twenty-nine million, five thousand, nine hundred sixty-two".