1200013072 has 10 divisors (see below), whose sum is σ = 2325025358. Its totient is φ = 600006528.

The previous prime is 1200013049. The next prime is 1200013079. The reversal of 1200013072 is 2703100021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1036582416 + 163430656 = 32196^2 + 12784^2 .

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 75000817 = 1200013072 / (1 + 2 + 0 + 0 + 0 + 1 + 3 + 0 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (1200013079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37500393 + ... + 37500424.

Almost surely, 2^1200013072 is an apocalyptic number.

It is an amenable number.

1200013072 is a deficient number, since it is larger than the sum of its proper divisors (1125012286).

1200013072 is an equidigital number, since it uses as much as digits as its factorization.

1200013072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75000825 (or 75000819 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 1200013072 is about 34641.2048289317. The cubic root of 1200013072 is about 1062.6624277999.

Adding to 1200013072 its reverse (2703100021), we get a palindrome (3903113093).

The spelling of 1200013072 in words is "one billion, two hundred million, thirteen thousand, seventy-two".