1201356 has 72 divisors (see below), whose sum is σ = 3485664. Its totient is φ = 345600.

The previous prime is 1201337. The next prime is 1201381. The reversal of 1201356 is 6531021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7881 + ... + 8031.

It is an arithmetic number, because the mean of its divisors is an integer number (48412).

2^1201356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742832).

1201356 is an abundant number, since it is smaller than the sum of its proper divisors (2284308).

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

1201356 is a wasteful number, since it uses less digits than its factorization.

1201356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1201356 is about 1096.0638667523. The cubic root of 1201356 is about 106.3058686571.

Adding to 1201356 its reverse (6531021), we get a palindrome (7732377).

The spelling of 1201356 in words is "one million, two hundred one thousand, three hundred fifty-six".