1200240253 has 4 divisors (see below), whose sum is σ = 1200323740. Its totient is φ = 1200156768.

The previous prime is 1200240227. The next prime is 1200240271. The reversal of 1200240253 is 3520420021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1111088889 + 89151364 = 33333^2 + 9442^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200240253 - 2⁵ = 1200240221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1200240253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200240653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14058 + ... + 50971.

It is an arithmetic number, because the mean of its divisors is an integer number (300080935).

Almost surely, 2^1200240253 is an apocalyptic number.

It is an amenable number.

1200240253 is a deficient number, since it is larger than the sum of its proper divisors (83487).

1200240253 is an equidigital number, since it uses as much as digits as its factorization.

1200240253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83486.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1200240253 is about 34644.4837311801. The cubic root of 1200240253 is about 1062.7294830361.

Adding to 1200240253 its reverse (3520420021), we get a palindrome (4720660274).

The spelling of 1200240253 in words is "one billion, two hundred million, two hundred forty thousand, two hundred fifty-three".