1249943 has 2 divisors, whose sum is σ = 1249944. Its totient is φ = 1249942.
The previous prime is 1249939. The next prime is 1249999. The reversal of 1249943 is 3499421.
It is a happy number.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 1249943 - 22 = 1249939 is a prime.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (1249043) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624971 + 624972.
It is an arithmetic number, because the mean of its divisors is an integer number (624972).
21249943 is an apocalyptic number.
1249943 is a deficient number, since it is larger than the sum of its proper divisors (1).
1249943 is an equidigital number, since it uses as much as digits as its factorization.
1249943 is an evil number, because the sum of its binary digits is even.
The product of its digits is 7776, while the sum is 32.
The square root of 1249943 is about 1118.0084972843. The cubic root of 1249943 is about 107.7200971063.
The spelling of 1249943 in words is "one million, two hundred forty-nine thousand, nine hundred forty-three".
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