129076972 has 24 divisors (see below), whose sum is σ = 228614400. Its totient is φ = 63763920.

The previous prime is 129076957. The next prime is 129076973. The reversal of 129076972 is 279670921.

It is not an unprimeable number, because it can be changed into a prime (129076973) 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, 132447 + ... + 133417.

It is an arithmetic number, because the mean of its divisors is an integer number (9525600).

Almost surely, 2^129076972 is an apocalyptic number.

It is an amenable number.

129076972 is a deficient number, since it is larger than the sum of its proper divisors (99537428).

129076972 is a wasteful number, since it uses less digits than its factorization.

129076972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 129076972 is about 11361.2046896445. The cubic root of 129076972 is about 505.3779114181.

The spelling of 129076972 in words is "one hundred twenty-nine million, seventy-six thousand, nine hundred seventy-two".