1321451241 has 8 divisors (see below), whose sum is σ = 1922110944. Its totient is φ = 800879520.

The previous prime is 1321451233. The next prime is 1321451317. The reversal of 1321451241 is 1421541231.

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

It is not a de Polignac number, because 1321451241 - 2³ = 1321451233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321451221) 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, 20021956 + ... + 20022021.

It is an arithmetic number, because the mean of its divisors is an integer number (240263868).

Almost surely, 2^1321451241 is an apocalyptic number.

1321451241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1321451241 is a deficient number, since it is larger than the sum of its proper divisors (600659703).

1321451241 is a wasteful number, since it uses less digits than its factorization.

1321451241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40043991.

The product of its digits is 960, while the sum is 24.

The square root of 1321451241 is about 36351.7708096868. The cubic root of 1321451241 is about 1097.3631721465.

Adding to 1321451241 its reverse (1421541231), we get a palindrome (2742992472).

It can be divided in two parts, 132145 and 1241, that added together give a triangular number (133386 = T₅₁₆).

The spelling of 1321451241 in words is "one billion, three hundred twenty-one million, four hundred fifty-one thousand, two hundred forty-one".