129230372 has 6 divisors (see below), whose sum is σ = 226153158. Its totient is φ = 64615184.

The previous prime is 129230371. The next prime is 129230383. The reversal of 129230372 is 273032921.

It can be written as a sum of positive squares in only one way, i.e., 114361636 + 14868736 = 10694^2 + 3856^2 .

It is a super-3 number, since 3×129230372³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (129230371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16153793 + ... + 16153800.

It is an arithmetic number, because the mean of its divisors is an integer number (37692193).

Almost surely, 2^129230372 is an apocalyptic number.

It is an amenable number.

129230372 is a deficient number, since it is larger than the sum of its proper divisors (96922786).

129230372 is a wasteful number, since it uses less digits than its factorization.

129230372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32307597 (or 32307595 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 129230372 is about 11367.9537296736. The cubic root of 129230372 is about 505.5780356268.

The spelling of 129230372 in words is "one hundred twenty-nine million, two hundred thirty thousand, three hundred seventy-two".