1321421030240 has 48 divisors (see below), whose sum is σ = 3173035194000. Its totient is φ = 519903352320.

The previous prime is 1321421030239. The next prime is 1321421030311. The reversal of 1321421030240 is 420301241231.

It is a congruent number.

It is an unprimeable number.

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, 67685990 + ... + 67705509.

It is an arithmetic number, because the mean of its divisors is an integer number (66104899875).

Almost surely, 2^{1321421030240} is an apocalyptic number.

1321421030240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321421030240 is an abundant number, since it is smaller than the sum of its proper divisors (1851614163760).

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

1321421030240 is a wasteful number, since it uses less digits than its factorization.

1321421030240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135391575 (or 135391567 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1321421030240 its reverse (420301241231), we get a palindrome (1741722271471).

The spelling of 1321421030240 in words is "one trillion, three hundred twenty-one billion, four hundred twenty-one million, thirty thousand, two hundred forty".