1253122459 has 6 divisors (see below), whose sum is σ = 1259578284. Its totient is φ = 1246671720.

The previous prime is 1253122441. The next prime is 1253122471. The reversal of 1253122459 is 9542213521.

It is not a de Polignac number, because 1253122459 - 2²⁵ = 1219568027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253122499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 512989 + ... + 515425.

It is an arithmetic number, because the mean of its divisors is an integer number (209929714).

Almost surely, 2^1253122459 is an apocalyptic number.

1253122459 is a deficient number, since it is larger than the sum of its proper divisors (6455825).

1253122459 is an frugal number, since it uses more digits than its factorization.

1253122459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5085 (or 2648 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 1253122459 is about 35399.4697559158. The cubic root of 1253122459 is about 1078.1135503975.

The spelling of 1253122459 in words is "one billion, two hundred fifty-three million, one hundred twenty-two thousand, four hundred fifty-nine".