1187245 has 8 divisors (see below), whose sum is σ = 1430784. Its totient is φ = 945744.

The previous prime is 1187239. The next prime is 1187261. The reversal of 1187245 is 5427811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187245 - 2⁷ = 1187117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1512 + ... + 2158.

It is an arithmetic number, because the mean of its divisors is an integer number (178848).

2^1187245 is an apocalyptic number.

It is an amenable number.

1187245 is a deficient number, since it is larger than the sum of its proper divisors (243539).

1187245 is an equidigital number, since it uses as much as digits as its factorization.

1187245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its digits is 2240, while the sum is 28.

The square root of 1187245 is about 1089.6077275791. The cubic root of 1187245 is about 105.8880091689. Note that the first 3 decimals are identical.

The spelling of 1187245 in words is "one million, one hundred eighty-seven thousand, two hundred forty-five".