1201530 has 48 divisors (see below), whose sum is σ = 3179232. Its totient is φ = 290400.

The previous prime is 1201523. The next prime is 1201531. The reversal of 1201530 is 351021.

It is a Curzon number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1201531) 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 23 ways as a sum of consecutive naturals, for example, 3465 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (66234).

2^1201530 is an apocalyptic number.

1201530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589616).

1201530 is an abundant number, since it is smaller than the sum of its proper divisors (1977702).

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

1201530 is a wasteful number, since it uses less digits than its factorization.

1201530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1201530 is about 1096.1432388151. The cubic root of 1201530 is about 106.3110007268.

Adding to 1201530 its reverse (351021), we get a palindrome (1552551).

The spelling of 1201530 in words is "one million, two hundred one thousand, five hundred thirty".