1204220045 has 32 divisors (see below), whose sum is σ = 1679016192. Its totient is φ = 812063232.

The previous prime is 1204220033. The next prime is 1204220053. The reversal of 1204220045 is 5400224021.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1204220045 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1204219999 and 1204220026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1642499 + ... + 1643231.

It is an arithmetic number, because the mean of its divisors is an integer number (52469256).

Almost surely, 2^1204220045 is an apocalyptic number.

It is an amenable number.

1204220045 is a deficient number, since it is larger than the sum of its proper divisors (474796147).

1204220045 is an equidigital number, since it uses as much as digits as its factorization.

1204220045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1204220045 is about 34701.8737966698. The cubic root of 1204220045 is about 1063.9027970660.

Adding to 1204220045 its reverse (5400224021), we get a palindrome (6604444066).

The spelling of 1204220045 in words is "one billion, two hundred four million, two hundred twenty thousand, forty-five".