129137451 has 8 divisors (see below), whose sum is σ = 172936080. Its totient is φ = 85715232.

The previous prime is 129137447. The next prime is 129137453. The reversal of 129137451 is 154731921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129137451 - 2² = 129137447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129137453) 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 7 ways as a sum of consecutive naturals, for example, 93300 + ... + 94673.

It is an arithmetic number, because the mean of its divisors is an integer number (21617010).

Almost surely, 2^129137451 is an apocalyptic number.

129137451 is a deficient number, since it is larger than the sum of its proper divisors (43798629).

129137451 is a wasteful number, since it uses less digits than its factorization.

129137451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188205.

The product of its digits is 7560, while the sum is 33.

The square root of 129137451 is about 11363.8660234975. The cubic root of 129137451 is about 505.4568306804.

The spelling of 129137451 in words is "one hundred twenty-nine million, one hundred thirty-seven thousand, four hundred fifty-one".