1071149 has 2 divisors, whose sum is σ = 1071150. Its totient is φ = 1071148.

The previous prime is 1071139. The next prime is 1071151. The reversal of 1071149 is 9411701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828100 + 243049 = 910^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1071149 - 2²⁰ = 22573 is a prime.

It is a super-2 number, since 2×1071149² = 2294720360402, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1071151, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535574 + 535575.

It is an arithmetic number, because the mean of its divisors is an integer number (535575).

2^1071149 is an apocalyptic number.

It is an amenable number.

1071149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071149 is an equidigital number, since it uses as much as digits as its factorization.

1071149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 1071149 is about 1034.9632843729. The cubic root of 1071149 is about 102.3175099113.

The spelling of 1071149 in words is "one million, seventy-one thousand, one hundred forty-nine".