1271433245 has 8 divisors (see below), whose sum is σ = 1561202016. Its totient is φ = 993491856.

The previous prime is 1271433217. The next prime is 1271433277. The reversal of 1271433245 is 5423341721.

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

It is a cyclic number.

It is not a de Polignac number, because 1271433245 - 2⁶ = 1271433181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2956607 + ... + 2957036.

It is an arithmetic number, because the mean of its divisors is an integer number (195150252).

Almost surely, 2^1271433245 is an apocalyptic number.

It is an amenable number.

1271433245 is a deficient number, since it is larger than the sum of its proper divisors (289768771).

1271433245 is an equidigital number, since it uses as much as digits as its factorization.

1271433245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5913691.

The product of its digits is 20160, while the sum is 32.

The square root of 1271433245 is about 35657.1626044474. The cubic root of 1271433245 is about 1083.3393568633.

Adding to 1271433245 its reverse (5423341721), we get a palindrome (6694774966).

The spelling of 1271433245 in words is "one billion, two hundred seventy-one million, four hundred thirty-three thousand, two hundred forty-five".