1201240255 has 8 divisors (see below), whose sum is σ = 1441872432. Its totient is φ = 960736128.

The previous prime is 1201240237. The next prime is 1201240259. The reversal of 1201240255 is 5520421021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201240255 - 2⁵ = 1201240223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201240259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9994 + ... + 50023.

It is an arithmetic number, because the mean of its divisors is an integer number (180234054).

Almost surely, 2^1201240255 is an apocalyptic number.

1201240255 is a deficient number, since it is larger than the sum of its proper divisors (240632177).

1201240255 is an equidigital number, since it uses as much as digits as its factorization.

1201240255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64025.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 1201240255 is about 34658.9130672039. The cubic root of 1201240255 is about 1063.0245452394.

Adding to 1201240255 its reverse (5520421021), we get a palindrome (6721661276).

The spelling of 1201240255 in words is "one billion, two hundred one million, two hundred forty thousand, two hundred fifty-five".