1271340734 has 8 divisors (see below), whose sum is σ = 1915196400. Its totient is φ = 632941936.

The previous prime is 1271340689. The next prime is 1271340737. The reversal of 1271340734 is 4370431721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1271340734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271340737) 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, 1363634 + ... + 1364565.

It is an arithmetic number, because the mean of its divisors is an integer number (239399550).

Almost surely, 2^1271340734 is an apocalyptic number.

1271340734 is a deficient number, since it is larger than the sum of its proper divisors (643855666).

1271340734 is a wasteful number, since it uses less digits than its factorization.

1271340734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728434.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 1271340734 is about 35655.8653520006. The cubic root of 1271340734 is about 1083.3130812046.

The spelling of 1271340734 in words is "one billion, two hundred seventy-one million, three hundred forty thousand, seven hundred thirty-four".