129265276 has 12 divisors (see below), whose sum is σ = 258530608. Its totient is φ = 55399392.

The previous prime is 129265273. The next prime is 129265277. The reversal of 129265276 is 672562921.

129265276 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129265273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2308281 + ... + 2308336.

Almost surely, 2^129265276 is an apocalyptic number.

It is an amenable number.

129265276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129265276 is a wasteful number, since it uses less digits than its factorization.

129265276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4616628 (or 4616626 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 129265276 is about 11369.4888187640. The cubic root of 129265276 is about 505.6235489402.

The spelling of 129265276 in words is "one hundred twenty-nine million, two hundred sixty-five thousand, two hundred seventy-six".