129547253 has 4 divisors (see below), whose sum is σ = 141324288. Its totient is φ = 117770220.

The previous prime is 129547219. The next prime is 129547267. The reversal of 129547253 is 352745921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352745921 = 11 ⋅32067811.

It is a cyclic number.

It is not a de Polignac number, because 129547253 - 2¹² = 129543157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129547213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5888501 + ... + 5888522.

It is an arithmetic number, because the mean of its divisors is an integer number (35331072).

Almost surely, 2^129547253 is an apocalyptic number.

It is an amenable number.

129547253 is a deficient number, since it is larger than the sum of its proper divisors (11777035).

129547253 is a wasteful number, since it uses less digits than its factorization.

129547253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11777034.

The product of its digits is 75600, while the sum is 38.

The square root of 129547253 is about 11381.8826650076. The cubic root of 129547253 is about 505.9909347061.

The spelling of 129547253 in words is "one hundred twenty-nine million, five hundred forty-seven thousand, two hundred fifty-three".