129453472 has 12 divisors (see below), whose sum is σ = 254861586. Its totient is φ = 64726720.

The previous prime is 129453469. The next prime is 129453473. The reversal of 129453472 is 274354921.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 11861136 = 10844^2 + 3444^2 .

It is not an unprimeable number, because it can be changed into a prime (129453473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2022679 + ... + 2022742.

Almost surely, 2^129453472 is an apocalyptic number.

It is an amenable number.

129453472 is a deficient number, since it is larger than the sum of its proper divisors (125408114).

129453472 is an equidigital number, since it uses as much as digits as its factorization.

129453472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4045431 (or 4045423 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 129453472 is about 11377.7621701282. The cubic root of 129453472 is about 505.8688073489.

The spelling of 129453472 in words is "one hundred twenty-nine million, four hundred fifty-three thousand, four hundred seventy-two".