129465253 has 4 divisors (see below), whose sum is σ = 129529548. Its totient is φ = 129400960.

The previous prime is 129465233. The next prime is 129465283. The reversal of 129465253 is 352564921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22591009 + 106874244 = 4753^2 + 10338^2 .

It is a cyclic number.

It is not a de Polignac number, because 129465253 - 2¹³ = 129457061 is a prime.

It is a super-2 number, since 2×129465253² = 33522503468708018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129465223) 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, 29026 + ... + 33187.

It is an arithmetic number, because the mean of its divisors is an integer number (32382387).

Almost surely, 2^129465253 is an apocalyptic number.

It is an amenable number.

129465253 is a deficient number, since it is larger than the sum of its proper divisors (64295).

129465253 is an equidigital number, since it uses as much as digits as its factorization.

129465253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64294.

The product of its digits is 64800, while the sum is 37.

The square root of 129465253 is about 11378.2798787866. The cubic root of 129465253 is about 505.8841525268.

The spelling of 129465253 in words is "one hundred twenty-nine million, four hundred sixty-five thousand, two hundred fifty-three".