1321241375 has 24 divisors (see below), whose sum is σ = 1663218960. Its totient is φ = 1047891600.

The previous prime is 1321241333. The next prime is 1321241419. The reversal of 1321241375 is 5731421231.

It is not a de Polignac number, because 1321241375 - 2¹⁰ = 1321240351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3485936 + ... + 3486314.

It is an arithmetic number, because the mean of its divisors is an integer number (69300790).

Almost surely, 2^1321241375 is an apocalyptic number.

1321241375 is a deficient number, since it is larger than the sum of its proper divisors (341977585).

1321241375 is an frugal number, since it uses more digits than its factorization.

1321241375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 551 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 1321241375 is about 36348.8840956638. The cubic root of 1321241375 is about 1097.3050765707.

The spelling of 1321241375 in words is "one billion, three hundred twenty-one million, two hundred forty-one thousand, three hundred seventy-five".