1210045 has 4 divisors (see below), whose sum is σ = 1452060. Its totient is φ = 968032.

The previous prime is 1210039. The next prime is 1210049. The reversal of 1210045 is 5400121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 534361 = 822^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210045 - 2³ = 1210037 is a prime.

1210045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121000 + ... + 121009.

It is an arithmetic number, because the mean of its divisors is an integer number (363015).

2^1210045 is an apocalyptic number.

It is an amenable number.

1210045 is a deficient number, since it is larger than the sum of its proper divisors (242015).

1210045 is an equidigital number, since it uses as much as digits as its factorization.

1210045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242014.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1210045 is about 1100.0204543553. The cubic root of 1210045 is about 106.5615446548.

Adding to 1210045 its reverse (5400121), we get a palindrome (6610166).

The spelling of 1210045 in words is "one million, two hundred ten thousand, forty-five".