1321275452 has 12 divisors (see below), whose sum is σ = 2642550960. Its totient is φ = 566260896.

The previous prime is 1321275427. The next prime is 1321275463. The reversal of 1321275452 is 2545721231.

1321275452 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23594177 + ... + 23594232.

It is an arithmetic number, because the mean of its divisors is an integer number (220212580).

Almost surely, 2^1321275452 is an apocalyptic number.

It is an amenable number.

1321275452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1321275452 is a wasteful number, since it uses less digits than its factorization.

1321275452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47188420 (or 47188418 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 1321275452 is about 36349.3528415569. The cubic root of 1321275452 is about 1097.3145102604.

Adding to 1321275452 its reverse (2545721231), we get a palindrome (3866996683).

The spelling of 1321275452 in words is "one billion, three hundred twenty-one million, two hundred seventy-five thousand, four hundred fifty-two".