1200027 has 4 divisors (see below), whose sum is σ = 1600040. Its totient is φ = 800016.

The previous prime is 1200007. The next prime is 1200061. The reversal of 1200027 is 7200021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1200027 - 2⁷ = 1199899 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

1200027 is a modest number, since divided by 27 gives 12 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1199985 and 1200021.

It is not an unprimeable number, because it can be changed into a prime (1200007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200002 + ... + 200007.

It is an arithmetic number, because the mean of its divisors is an integer number (400010).

2^1200027 is an apocalyptic number.

1200027 is a deficient number, since it is larger than the sum of its proper divisors (400013).

1200027 is an equidigital number, since it uses as much as digits as its factorization.

1200027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400012.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 1200027 is about 1095.4574386986. The cubic root of 1200027 is about 106.2666539062.

Adding to 1200027 its reverse (7200021), we get a palindrome (8400048).

It can be divided in two parts, 1 and 200027, that added together give a triangular number (200028 = T₆₃₂).

The spelling of 1200027 in words is "one million, two hundred thousand, twenty-seven".