1191141 has 36 divisors (see below), whose sum is σ = 2083692. Its totient is φ = 653184.
The previous prime is 1191131. The next prime is 1191149. The reversal of 1191141 is 1411911.
It can be written as a sum of positive squares in 2 ways, for example, as 893025 + 298116 = 945^2 + 546^2 .
It is not a de Polignac number, because 1191141 - 25 = 1191109 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1191149) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16281 + ... + 16353.
21191141 is an apocalyptic number.
It is an amenable number.
1191141 is a deficient number, since it is larger than the sum of its proper divisors (892551).
1191141 is a wasteful number, since it uses less digits than its factorization.
1191141 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 130 (or 120 counting only the distinct ones).
The product of its digits is 36, while the sum is 18.
The square root of 1191141 is about 1091.3940626556. The cubic root of 1191141 is about 106.0037081888.
The spelling of 1191141 in words is "one million, one hundred ninety-one thousand, one hundred forty-one".
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