1147071 has 4 divisors (see below), whose sum is σ = 1529432. Its totient is φ = 764712.

The previous prime is 1147067. The next prime is 1147073. The reversal of 1147071 is 1707411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1707411 = 3 ⋅569137.

It is not a de Polignac number, because 1147071 - 2² = 1147067 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191176 + ... + 191181.

It is an arithmetic number, because the mean of its divisors is an integer number (382358).

2^1147071 is an apocalyptic number.

1147071 is a deficient number, since it is larger than the sum of its proper divisors (382361).

1147071 is an equidigital number, since it uses as much as digits as its factorization.

1147071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382360.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 1147071 is about 1071.0140055107. The cubic root of 1147071 is about 104.6799323705.

The spelling of 1147071 in words is "one million, one hundred forty-seven thousand, seventy-one".