1200540513 has 8 divisors (see below), whose sum is σ = 1601154688. Its totient is φ = 800143344.

The previous prime is 1200540511. The next prime is 1200540529. The reversal of 1200540513 is 3150450021.

1200540513 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200540513 - 2¹ = 1200540511 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200540513.

It is not an unprimeable number, because it can be changed into a prime (1200540511) 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, 40870 + ... + 63807.

It is an arithmetic number, because the mean of its divisors is an integer number (200144336).

Almost surely, 2^1200540513 is an apocalyptic number.

It is an amenable number.

1200540513 is a deficient number, since it is larger than the sum of its proper divisors (400614175).

1200540513 is a wasteful number, since it uses less digits than its factorization.

1200540513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108503.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1200540513 is about 34648.8169062091. The cubic root of 1200540513 is about 1062.8180954476.

Adding to 1200540513 its reverse (3150450021), we get a palindrome (4350990534).

The spelling of 1200540513 in words is "one billion, two hundred million, five hundred forty thousand, five hundred thirteen".