1181249 has 4 divisors (see below), whose sum is σ = 1243440. Its totient is φ = 1119060.

The previous prime is 1181237. The next prime is 1181263. The reversal of 1181249 is 9421811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9421811 = 7 ⋅1345973.

It is a cyclic number.

It is not a de Polignac number, because 1181249 - 2¹² = 1177153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1181209) 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, 31067 + ... + 31104.

It is an arithmetic number, because the mean of its divisors is an integer number (310860).

2^1181249 is an apocalyptic number.

1181249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1181249 is a deficient number, since it is larger than the sum of its proper divisors (62191).

1181249 is an equidigital number, since it uses as much as digits as its factorization.

1181249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62190.

The product of its digits is 576, while the sum is 26.

The square root of 1181249 is about 1086.8527959204. The cubic root of 1181249 is about 105.7094511511.

The spelling of 1181249 in words is "one million, one hundred eighty-one thousand, two hundred forty-nine".