1272084061 has 2 divisors, whose sum is σ = 1272084062. Its totient is φ = 1272084060.

The previous prime is 1272084059. The next prime is 1272084083. The reversal of 1272084061 is 1604802721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1265224900 + 6859161 = 35570^2 + 2619^2 .

It is an emirp because it is prime and its reverse (1604802721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1272084061 - 2¹ = 1272084059 is a prime.

Together with 1272084059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272084091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636042030 + 636042031.

It is an arithmetic number, because the mean of its divisors is an integer number (636042031).

Almost surely, 2^1272084061 is an apocalyptic number.

It is an amenable number.

1272084061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272084061 is an equidigital number, since it uses as much as digits as its factorization.

1272084061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1272084061 is about 35666.2874574857. The cubic root of 1272084061 is about 1083.5241704254.

Adding to 1272084061 its reverse (1604802721), we get a palindrome (2876886782).

The spelling of 1272084061 in words is "one billion, two hundred seventy-two million, eighty-four thousand, sixty-one".