129772004 has 6 divisors (see below), whose sum is σ = 227101014. Its totient is φ = 64886000.

The previous prime is 129772001. The next prime is 129772009. The reversal of 129772004 is 400277921.

It can be written as a sum of positive squares in only one way, i.e., 121660900 + 8111104 = 11030^2 + 2848^2 .

It is not an unprimeable number, because it can be changed into a prime (129772001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16221497 + ... + 16221504.

It is an arithmetic number, because the mean of its divisors is an integer number (37850169).

Almost surely, 2^129772004 is an apocalyptic number.

It is an amenable number.

129772004 is a deficient number, since it is larger than the sum of its proper divisors (97329010).

129772004 is a wasteful number, since it uses less digits than its factorization.

129772004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32443005 (or 32443003 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 129772004 is about 11391.7515773475. The cubic root of 129772004 is about 506.2833795193.

The spelling of 129772004 in words is "one hundred twenty-nine million, seven hundred seventy-two thousand, four".