1210505045 has 8 divisors (see below), whose sum is σ = 1476419640. Its totient is φ = 952528320.

The previous prime is 1210505041. The next prime is 1210505063. The reversal of 1210505045 is 5405050121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4401604 + 1206103441 = 2098^2 + 34729^2 .

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

It is not a de Polignac number, because 1210505045 - 2² = 1210505041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210505045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210505041) 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, 1984130 + ... + 1984739.

It is an arithmetic number, because the mean of its divisors is an integer number (184552455).

Almost surely, 2^1210505045 is an apocalyptic number.

It is an amenable number.

1210505045 is a deficient number, since it is larger than the sum of its proper divisors (265914595).

1210505045 is an equidigital number, since it uses as much as digits as its factorization.

1210505045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3968935.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1210505045 is about 34792.3130159522. The cubic root of 1210505045 is about 1065.7504742933.

Adding to 1210505045 its reverse (5405050121), we get a palindrome (6615555166).

The spelling of 1210505045 in words is "one billion, two hundred ten million, five hundred five thousand, forty-five".