1271742344 has 32 divisors (see below), whose sum is σ = 2451306240. Its totient is φ = 618307200.

The previous prime is 1271742319. The next prime is 1271742347. The reversal of 1271742344 is 4432471721.

It is a super-2 number, since 2×1271742344² = 3234657179045228672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1271742347) by changing a digit.

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, 26129 + ... + 56799.

It is an arithmetic number, because the mean of its divisors is an integer number (76603320).

Almost surely, 2^1271742344 is an apocalyptic number.

It is an amenable number.

1271742344 is a deficient number, since it is larger than the sum of its proper divisors (1179563896).

1271742344 is a wasteful number, since it uses less digits than its factorization.

1271742344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30821 (or 30817 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The square root of 1271742344 is about 35661.4966595627. The cubic root of 1271742344 is about 1083.4271402057.

It can be divided in two parts, 127 and 1742344, that added together give a palindrome (1742471).

The spelling of 1271742344 in words is "one billion, two hundred seventy-one million, seven hundred forty-two thousand, three hundred forty-four".