1204545505 has 8 divisors (see below), whose sum is σ = 1455854400. Its totient is φ = 956703216.

The previous prime is 1204545499. The next prime is 1204545509. The reversal of 1204545505 is 5055454021.

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 1204545505 - 2⁵ = 1204545473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1204545509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865885 + ... + 867274.

It is an arithmetic number, because the mean of its divisors is an integer number (181981800).

Almost surely, 2^1204545505 is an apocalyptic number.

It is an amenable number.

1204545505 is a deficient number, since it is larger than the sum of its proper divisors (251308895).

1204545505 is a wasteful number, since it uses less digits than its factorization.

1204545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733303.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 1204545505 is about 34706.5628520025. The cubic root of 1204545505 is about 1063.9986340952.

Adding to 1204545505 its reverse (5055454021), we get a palindrome (6259999526).

The spelling of 1204545505 in words is "one billion, two hundred four million, five hundred forty-five thousand, five hundred five".