1140871 has 2 divisors, whose sum is σ = 1140872. Its totient is φ = 1140870.
The previous prime is 1140863. The next prime is 1140901. The reversal of 1140871 is 1780411.
It is a weak prime.
It is an emirp because it is prime and its reverse (1780411) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1140871 - 23 = 1140863 is a prime.
It is a Chen prime.
1140871 is a lucky number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1140851) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570435 + 570436.
It is an arithmetic number, because the mean of its divisors is an integer number (570436).
21140871 is an apocalyptic number.
1140871 is a deficient number, since it is larger than the sum of its proper divisors (1).
1140871 is an equidigital number, since it uses as much as digits as its factorization.
1140871 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 224, while the sum is 22.
The square root of 1140871 is about 1068.1156304446. The cubic root of 1140871 is about 104.4909907299.
The spelling of 1140871 in words is "one million, one hundred forty thousand, eight hundred seventy-one".
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