1253129305 has 8 divisors (see below), whose sum is σ = 1504393344. Its totient is φ = 1002078000.

The previous prime is 1253129303. The next prime is 1253129329. The reversal of 1253129305 is 5039213521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253129305 - 2¹ = 1253129303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253129303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39921 + ... + 64030.

It is an arithmetic number, because the mean of its divisors is an integer number (188049168).

Almost surely, 2^1253129305 is an apocalyptic number.

It is an amenable number.

1253129305 is a deficient number, since it is larger than the sum of its proper divisors (251264039).

1253129305 is a wasteful number, since it uses less digits than its factorization.

1253129305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106367.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 1253129305 is about 35399.5664521474. The cubic root of 1253129305 is about 1078.1155136937.

The spelling of 1253129305 in words is "one billion, two hundred fifty-three million, one hundred twenty-nine thousand, three hundred five".