1252730117 has 4 divisors (see below), whose sum is σ = 1253225280. Its totient is φ = 1252234956.

The previous prime is 1252730107. The next prime is 1252730123. The reversal of 1252730117 is 7110372521.

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.

It is a cyclic number.

It is not a de Polignac number, because 1252730117 - 2¹⁴ = 1252713733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1252730117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252730107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243767 + ... + 248852.

It is an arithmetic number, because the mean of its divisors is an integer number (313306320).

Almost surely, 2^1252730117 is an apocalyptic number.

It is an amenable number.

1252730117 is a deficient number, since it is larger than the sum of its proper divisors (495163).

1252730117 is an equidigital number, since it uses as much as digits as its factorization.

1252730117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495162.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 1252730117 is about 35393.9276854095. The cubic root of 1252730117 is about 1078.0010225872.

The spelling of 1252730117 in words is "one billion, two hundred fifty-two million, seven hundred thirty thousand, one hundred seventeen".