1321254253 has 8 divisors (see below), whose sum is σ = 1442381760. Its totient is φ = 1200295680.

The previous prime is 1321254247. The next prime is 1321254283. The reversal of 1321254253 is 3524521231.

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 1321254253 - 2²¹ = 1319157101 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 (1321254283) 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 7 ways as a sum of consecutive naturals, for example, 25588 + ... + 57421.

It is an arithmetic number, because the mean of its divisors is an integer number (180297720).

Almost surely, 2^1321254253 is an apocalyptic number.

It is an amenable number.

1321254253 is a deficient number, since it is larger than the sum of its proper divisors (121127507).

1321254253 is a wasteful number, since it uses less digits than its factorization.

1321254253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84467.

The product of its digits is 7200, while the sum is 28.

The square root of 1321254253 is about 36349.0612395974. The cubic root of 1321254253 is about 1097.3086416646.

Adding to 1321254253 its reverse (3524521231), we get a palindrome (4845775484).

The spelling of 1321254253 in words is "one billion, three hundred twenty-one million, two hundred fifty-four thousand, two hundred fifty-three".