1271612939 has 6 divisors (see below), whose sum is σ = 1281411300. Its totient is φ = 1261888940.

The previous prime is 1271612887. The next prime is 1271612977. The reversal of 1271612939 is 9392161721.

It is a de Polignac number, because none of the positive numbers 2^k-1271612939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1271612896 and 1271612905.

It is not an unprimeable number, because it can be changed into a prime (1271612999) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19889 + ... + 54210.

It is an arithmetic number, because the mean of its divisors is an integer number (213568550).

Almost surely, 2^1271612939 is an apocalyptic number.

1271612939 is a deficient number, since it is larger than the sum of its proper divisors (9798361).

1271612939 is an frugal number, since it uses more digits than its factorization.

1271612939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74361 (or 74230 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 1271612939 is about 35659.6822616243. The cubic root of 1271612939 is about 1083.3903912407.

The spelling of 1271612939 in words is "one billion, two hundred seventy-one million, six hundred twelve thousand, nine hundred thirty-nine".