1200040013 has 8 divisors (see below), whose sum is σ = 1271638080. Its totient is φ = 1128553920.

The previous prime is 1200040003. The next prime is 1200040031. The reversal of 1200040013 is 3100400021.

It is a happy number.

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 1200040013 - 2¹⁰ = 1200038989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1200039976 and 1200040003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200040003) 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, 5393 + ... + 49286.

It is an arithmetic number, because the mean of its divisors is an integer number (158954760).

Almost surely, 2^1200040013 is an apocalyptic number.

It is an amenable number.

1200040013 is a deficient number, since it is larger than the sum of its proper divisors (71598067).

1200040013 is a wasteful number, since it uses less digits than its factorization.

1200040013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55987.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1200040013 is about 34641.5936844713. The cubic root of 1200040013 is about 1062.6703802061.

Adding to 1200040013 its reverse (3100400021), we get a palindrome (4300440034).

The spelling of 1200040013 in words is "one billion, two hundred million, forty thousand, thirteen".