1201140 has 36 divisors (see below), whose sum is σ = 3644004. Its totient is φ = 320256.

The previous prime is 1201117. The next prime is 1201141. The reversal of 1201140 is 411021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 197136 + 1004004 = 444^2 + 1002^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3157 + ... + 3516.

2^1201140 is an apocalyptic number.

1201140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201140 is an abundant number, since it is smaller than the sum of its proper divisors (2442864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201140 is a wasteful number, since it uses less digits than its factorization.

1201140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6688 (or 6683 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1201140 is about 1095.9653279187. The cubic root of 1201140 is about 106.2994971225.

Adding to 1201140 its reverse (411021), we get a palindrome (1612161).

The spelling of 1201140 in words is "one million, two hundred one thousand, one hundred forty".