1201134545 has 12 divisors (see below), whose sum is σ = 1560765276. Its totient is φ = 886991040.

The previous prime is 1201134511. The next prime is 1201134551. The reversal of 1201134545 is 5454311021.

It can be written as a sum of positive squares in 6 ways, for example, as 589858369 + 611276176 = 24287^2 + 24724^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1201134545 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 709886 + ... + 711575.

It is an arithmetic number, because the mean of its divisors is an integer number (130063773).

Almost surely, 2^1201134545 is an apocalyptic number.

It is an amenable number.

1201134545 is a deficient number, since it is larger than the sum of its proper divisors (359630731).

1201134545 is a wasteful number, since it uses less digits than its factorization.

1201134545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421492 (or 1421479 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1201134545 is about 34657.3880291057. The cubic root of 1201134545 is about 1062.9933620183.

Adding to 1201134545 its reverse (5454311021), we get a palindrome (6655445566).

The spelling of 1201134545 in words is "one billion, two hundred one million, one hundred thirty-four thousand, five hundred forty-five".