1271643422 has 32 divisors (see below), whose sum is σ = 2207126208. Its totient is φ = 538223616.

The previous prime is 1271643403. The next prime is 1271643433. The reversal of 1271643422 is 2243461721.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1027388 + ... + 1028624.

It is an arithmetic number, because the mean of its divisors is an integer number (68972694).

Almost surely, 2^1271643422 is an apocalyptic number.

1271643422 is a deficient number, since it is larger than the sum of its proper divisors (935482786).

1271643422 is a wasteful number, since it uses less digits than its factorization.

1271643422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its digits is 16128, while the sum is 32.

The square root of 1271643422 is about 35660.1096745369. The cubic root of 1271643422 is about 1083.3990481531.

The spelling of 1271643422 in words is "one billion, two hundred seventy-one million, six hundred forty-three thousand, four hundred twenty-two".