129027451 has 16 divisors (see below), whose sum is σ = 151538688. Its totient is φ = 107553600.

The previous prime is 129027419. The next prime is 129027463. The reversal of 129027451 is 154720921.

It is not a de Polignac number, because 129027451 - 2⁵ = 129027419 is a prime.

It is a super-2 number, since 2×129027451² = 33296166223114802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129027491) 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 15 ways as a sum of consecutive naturals, for example, 132396 + ... + 133366.

It is an arithmetic number, because the mean of its divisors is an integer number (9471168).

Almost surely, 2^129027451 is an apocalyptic number.

129027451 is a deficient number, since it is larger than the sum of its proper divisors (22511237).

129027451 is an equidigital number, since it uses as much as digits as its factorization.

129027451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 129027451 is about 11359.0250902091. The cubic root of 129027451 is about 505.3132729304.

The spelling of 129027451 in words is "one hundred twenty-nine million, twenty-seven thousand, four hundred fifty-one".