1200851 has 4 divisors (see below), whose sum is σ = 1211592. Its totient is φ = 1190112.

The previous prime is 1200839. The next prime is 1200869. The reversal of 1200851 is 1580021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200811) 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, 5201 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (302898).

2^1200851 is an apocalyptic number.

1200851 is a deficient number, since it is larger than the sum of its proper divisors (10741).

1200851 is a wasteful number, since it uses less digits than its factorization.

1200851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10740.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1200851 is about 1095.8334727503. The cubic root of 1200851 is about 106.2909710503.

Adding to 1200851 its reverse (1580021), we get a palindrome (2780872).

The spelling of 1200851 in words is "one million, two hundred thousand, eight hundred fifty-one".