1001200306 has 4 divisors (see below), whose sum is σ = 1501800462. Its totient is φ = 500600152.

The previous prime is 1001200289. The next prime is 1001200337. The reversal of 1001200306 is 6030021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6030021001 = 811 ⋅7435291.

It can be written as a sum of positive squares in only one way, i.e., 991683081 + 9517225 = 31491^2 + 3085^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250300075 + ... + 250300078.

Almost surely, 2^1001200306 is an apocalyptic number.

1001200306 is a deficient number, since it is larger than the sum of its proper divisors (500600156).

1001200306 is an equidigital number, since it uses as much as digits as its factorization.

1001200306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500600155.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1001200306 is about 31641.7494143418. The cubic root of 1001200306 is about 1000.3999420251.

Adding to 1001200306 its reverse (6030021001), we get a palindrome (7031221307).

It can be divided in two parts, 100120030 and 6, that added together give a square (100120036 = 10006²).

The spelling of 1001200306 in words is "one billion, one million, two hundred thousand, three hundred six".