1220300045 has 8 divisors (see below), whose sum is σ = 1464571896. Its totient is φ = 976098816.

The previous prime is 1220300041. The next prime is 1220300051. The reversal of 1220300045 is 5400030221.

It can be written as a sum of positive squares in 4 ways, for example, as 195916009 + 1024384036 = 13997^2 + 32006^2 .

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 1220300045 - 2² = 1220300041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220299996 and 1220300032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220300041) 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, 34229 + ... + 60101.

It is an arithmetic number, because the mean of its divisors is an integer number (183071487).

Almost surely, 2^1220300045 is an apocalyptic number.

It is an amenable number.

1220300045 is a deficient number, since it is larger than the sum of its proper divisors (244271851).

1220300045 is an equidigital number, since it uses as much as digits as its factorization.

1220300045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35311.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1220300045 is about 34932.7932607743. The cubic root of 1220300045 is about 1068.6173205104.

Adding to 1220300045 its reverse (5400030221), we get a palindrome (6620330266).

The spelling of 1220300045 in words is "one billion, two hundred twenty million, three hundred thousand, forty-five".