1211045 has 16 divisors (see below), whose sum is σ = 1608768. Its totient is φ = 867840.

The previous prime is 1211039. The next prime is 1211051. The reversal of 1211045 is 5401121.

It is an interprime number because it is at equal distance from previous prime (1211039) and next prime (1211051).

It is not a de Polignac number, because 1211045 - 2¹⁰ = 1210021 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 15 ways as a sum of consecutive naturals, for example, 5222 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (100548).

2^1211045 is an apocalyptic number.

It is an amenable number.

1211045 is a deficient number, since it is larger than the sum of its proper divisors (397723).

1211045 is a wasteful number, since it uses less digits than its factorization.

1211045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1211045 is about 1100.4748974874. The cubic root of 1211045 is about 106.5908912778.

Adding to 1211045 its reverse (5401121), we get a palindrome (6612166).

The spelling of 1211045 in words is "one million, two hundred eleven thousand, forty-five".