1321035504240 has 80 divisors (see below), whose sum is σ = 4105737885600. Its totient is φ = 351370515456.

The previous prime is 1321035504193. The next prime is 1321035504251. The reversal of 1321035504240 is 424055301231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1321035504198 and 1321035504207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6981595 + ... + 7168314.

It is an arithmetic number, because the mean of its divisors is an integer number (51321723570).

Almost surely, 2^{1321035504240} is an apocalyptic number.

1321035504240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321035504240 is an abundant number, since it is smaller than the sum of its proper divisors (2784702381360).

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

1321035504240 is a wasteful number, since it uses less digits than its factorization.

1321035504240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14150314 (or 14150308 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 1321035504240 in words is "one trillion, three hundred twenty-one billion, thirty-five million, five hundred four thousand, two hundred forty".