1201322240 has 36 divisors (see below), whose sum is σ = 2877545244. Its totient is φ = 480528384.

The previous prime is 1201322203. The next prime is 1201322251. The reversal of 1201322240 is 422231021.

It can be written as a sum of positive squares in 2 ways, for example, as 708837376 + 492484864 = 26624^2 + 22192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467987 + ... + 470546.

Almost surely, 2^1201322240 is an apocalyptic number.

1201322240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201322240 is an abundant number, since it is smaller than the sum of its proper divisors (1676223004).

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

1201322240 is an frugal number, since it uses more digits than its factorization.

1201322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938554 (or 938540 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1201322240 is about 34660.0957875191. The cubic root of 1201322240 is about 1063.0487286016.

Adding to 1201322240 its reverse (422231021), we get a palindrome (1623553261).

The spelling of 1201322240 in words is "one billion, two hundred one million, three hundred twenty-two thousand, two hundred forty".