1375142771 has 4 divisors (see below), whose sum is σ = 1375645032. Its totient is φ = 1374640512.

The previous prime is 1375142753. The next prime is 1375142789. The reversal of 1375142771 is 1772415731.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1375142753) and next prime (1375142789).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1375142771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375142711) 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 3 ways as a sum of consecutive naturals, for example, 247001 + ... + 252506.

It is an arithmetic number, because the mean of its divisors is an integer number (343911258).

Almost surely, 2^1375142771 is an apocalyptic number.

1375142771 is a deficient number, since it is larger than the sum of its proper divisors (502261).

1375142771 is an equidigital number, since it uses as much as digits as its factorization.

1375142771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502260.

The product of its digits is 41160, while the sum is 38.

The square root of 1375142771 is about 37082.9175092791. The cubic root of 1375142771 is about 1112.0285312086.

The spelling of 1375142771 in words is "one billion, three hundred seventy-five million, one hundred forty-two thousand, seven hundred seventy-one".