129753955 has 4 divisors (see below), whose sum is σ = 155704752. Its totient is φ = 103803160.

The previous prime is 129753929. The next prime is 129753959. The reversal of 129753955 is 559357921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 559357921 = 10391 ⋅53831.

It is a de Polignac number, because none of the positive numbers 2^k-129753955 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129753959) 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, 12975391 + ... + 12975400.

It is an arithmetic number, because the mean of its divisors is an integer number (38926188).

Almost surely, 2^129753955 is an apocalyptic number.

129753955 is a deficient number, since it is larger than the sum of its proper divisors (25950797).

129753955 is an equidigital number, since it uses as much as digits as its factorization.

129753955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25950796.

The product of its digits is 425250, while the sum is 46.

The square root of 129753955 is about 11390.9593538033. The cubic root of 129753955 is about 506.2599067309.

The spelling of 129753955 in words is "one hundred twenty-nine million, seven hundred fifty-three thousand, nine hundred fifty-five".