1253120709 has 8 divisors (see below), whose sum is σ = 1672927200. Its totient is φ = 834364016.

The previous prime is 1253120689. The next prime is 1253120731. The reversal of 1253120709 is 9070213521.

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

It is a cyclic number.

It is not a de Polignac number, because 1253120709 - 2¹⁹ = 1252596421 is a prime.

It is a super-2 number, since 2×1253120709² = 3140623022649325362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253122709) 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, 259659 + ... + 264440.

It is an arithmetic number, because the mean of its divisors is an integer number (209115900).

Almost surely, 2^1253120709 is an apocalyptic number.

It is an amenable number.

1253120709 is a deficient number, since it is larger than the sum of its proper divisors (419806491).

1253120709 is an equidigital number, since it uses as much as digits as its factorization.

1253120709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524899.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 1253120709 is about 35399.4450380228. The cubic root of 1253120709 is about 1078.1130485312.

The spelling of 1253120709 in words is "one billion, two hundred fifty-three million, one hundred twenty thousand, seven hundred nine".