1272907941901 has 4 divisors (see below), whose sum is σ = 1272910715100. Its totient is φ = 1272905168704.

The previous prime is 1272907941889. The next prime is 1272907942001. The reversal of 1272907941901 is 1091497092721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1122542369001 + 150365572900 = 1059501^2 + 387770^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272907941901 - 2¹⁷ = 1272907810829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272907941001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515806 + ... + 1676863.

It is an arithmetic number, because the mean of its divisors is an integer number (318227678775).

Almost surely, 2^{1272907941901} is an apocalyptic number.

It is an amenable number.

1272907941901 is a deficient number, since it is larger than the sum of its proper divisors (2773199).

1272907941901 is an equidigital number, since it uses as much as digits as its factorization.

1272907941901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773198.

The product of its (nonzero) digits is 571536, while the sum is 52.

The spelling of 1272907941901 in words is "one trillion, two hundred seventy-two billion, nine hundred seven million, nine hundred forty-one thousand, nine hundred one".