1201156 has 12 divisors (see below), whose sum is σ = 2293200. Its totient is φ = 545960.

The previous prime is 1201153. The next prime is 1201163. The reversal of 1201156 is 6511021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1201153) 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, 13606 + ... + 13693.

It is an arithmetic number, because the mean of its divisors is an integer number (191100).

2^1201156 is an apocalyptic number.

It is an amenable number.

1201156 is a deficient number, since it is larger than the sum of its proper divisors (1092044).

1201156 is a wasteful number, since it uses less digits than its factorization.

1201156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27314 (or 27312 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1201156 is about 1095.9726273954. The cubic root of 1201156 is about 106.2999691142.

Adding to 1201156 its product of nonzero digits (60), we get a square (1201216 = 1096²).

Adding to 1201156 its reverse (6511021), we get a palindrome (7712177).

The spelling of 1201156 in words is "one million, two hundred one thousand, one hundred fifty-six".