1272385707 has 4 divisors (see below), whose sum is σ = 1696514280. Its totient is φ = 848257136.

The previous prime is 1272385651. The next prime is 1272385721. The reversal of 1272385707 is 7075832721.

1272385707 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7075832721 = 3 ⋅2358610907.

It is a cyclic number.

It is not a de Polignac number, because 1272385707 - 2¹⁸ = 1272123563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272385307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212064282 + ... + 212064287.

It is an arithmetic number, because the mean of its divisors is an integer number (424128570).

Almost surely, 2^1272385707 is an apocalyptic number.

1272385707 is a deficient number, since it is larger than the sum of its proper divisors (424128573).

1272385707 is an equidigital number, since it uses as much as digits as its factorization.

1272385707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424128572.

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 1272385707 is about 35670.5159340316. The cubic root of 1272385707 is about 1083.6098080838.

The spelling of 1272385707 in words is "one billion, two hundred seventy-two million, three hundred eighty-five thousand, seven hundred seven".