1271345044 has 24 divisors (see below), whose sum is σ = 2262506400. Its totient is φ = 625004640.

The previous prime is 1271345041. The next prime is 1271345059. The reversal of 1271345044 is 4405431721.

It is a junction number, because it is equal to n+sod(n) for n = 1271344997 and 1271345015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1271345041) 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, 45987 + ... + 68245.

It is an arithmetic number, because the mean of its divisors is an integer number (94271100).

Almost surely, 2^1271345044 is an apocalyptic number.

It is an amenable number.

1271345044 is a deficient number, since it is larger than the sum of its proper divisors (991161356).

1271345044 is a wasteful number, since it uses less digits than its factorization.

1271345044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22503 (or 22501 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 1271345044 is about 35655.9257908135. The cubic root of 1271345044 is about 1083.3143053910.

Adding to 1271345044 its reverse (4405431721), we get a palindrome (5676776765).

The spelling of 1271345044 in words is "one billion, two hundred seventy-one million, three hundred forty-five thousand, forty-four".