1271055742 has 16 divisors (see below), whose sum is σ = 2082350592. Its totient is φ = 577074520.

The previous prime is 1271055701. The next prime is 1271055757. The reversal of 1271055742 is 2475501721.

It is a junction number, because it is equal to n+sod(n) for n = 1271055698 and 1271055707.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14488 + ... + 52459.

It is an arithmetic number, because the mean of its divisors is an integer number (130146912).

Almost surely, 2^1271055742 is an apocalyptic number.

1271055742 is a deficient number, since it is larger than the sum of its proper divisors (811294850).

1271055742 is a wasteful number, since it uses less digits than its factorization.

1271055742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67823.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1271055742 is about 35651.8687027763. The cubic root of 1271055742 is about 1083.2321276554.

The spelling of 1271055742 in words is "one billion, two hundred seventy-one million, fifty-five thousand, seven hundred forty-two".