1205424545 has 16 divisors (see below), whose sum is σ = 1579125072. Its totient is φ = 877962240.

The previous prime is 1205424523. The next prime is 1205424551. The reversal of 1205424545 is 5454245021.

It can be written as a sum of positive squares in 8 ways, for example, as 27081616 + 1178342929 = 5204^2 + 34327^2 .

It is not a de Polignac number, because 1205424545 - 2²⁰ = 1204375969 is a prime.

It is a super-3 number, since 3×1205424545³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122276 + ... + 131765.

It is an arithmetic number, because the mean of its divisors is an integer number (98695317).

Almost surely, 2^1205424545 is an apocalyptic number.

It is an amenable number.

1205424545 is a deficient number, since it is larger than the sum of its proper divisors (373700527).

1205424545 is a wasteful number, since it uses less digits than its factorization.

1205424545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254132.

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 1205424545 is about 34719.2244297018. The cubic root of 1205424545 is about 1064.2573955757.

Adding to 1205424545 its reverse (5454245021), we get a palindrome (6659669566).

The spelling of 1205424545 in words is "one billion, two hundred five million, four hundred twenty-four thousand, five hundred forty-five".