1121385 has 8 divisors (see below), whose sum is σ = 1794240. Its totient is φ = 598064.

The previous prime is 1121383. The next prime is 1121387. The reversal of 1121385 is 5831211.

It is an interprime number because it is at equal distance from previous prime (1121383) and next prime (1121387).

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 1121385 - 2¹ = 1121383 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37365 + ... + 37394.

It is an arithmetic number, because the mean of its divisors is an integer number (224280).

2^1121385 is an apocalyptic number.

1121385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121385 is a deficient number, since it is larger than the sum of its proper divisors (672855).

1121385 is an equidigital number, since it uses as much as digits as its factorization.

1121385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74767.

The product of its digits is 240, while the sum is 21.

The square root of 1121385 is about 1058.9546732509. The cubic root of 1121385 is about 103.8926715726.

Adding to 1121385 its reverse (5831211), we get a palindrome (6952596).

The spelling of 1121385 in words is "one million, one hundred twenty-one thousand, three hundred eighty-five".