129274801 has 4 divisors (see below), whose sum is σ = 129344292. Its totient is φ = 129205312.

The previous prime is 129274793. The next prime is 129274807. The reversal of 129274801 is 108472921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 108472921 = 41 ⋅2645681.

It can be written as a sum of positive squares in 2 ways, for example, as 86044176 + 43230625 = 9276^2 + 6575^2 .

It is a cyclic number.

It is not a de Polignac number, because 129274801 - 2³ = 129274793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129274807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31876 + ... + 35701.

It is an arithmetic number, because the mean of its divisors is an integer number (32336073).

Almost surely, 2^129274801 is an apocalyptic number.

It is an amenable number.

129274801 is a deficient number, since it is larger than the sum of its proper divisors (69491).

129274801 is an equidigital number, since it uses as much as digits as its factorization.

129274801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69490.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 129274801 is about 11369.9076953157. The cubic root of 129274801 is about 505.6359677072.

The spelling of 129274801 in words is "one hundred twenty-nine million, two hundred seventy-four thousand, eight hundred one".