1321001420392 has 16 divisors (see below), whose sum is σ = 2481230708100. Its totient is φ = 659339898240.

The previous prime is 1321001420363. The next prime is 1321001420423. The reversal of 1321001420392 is 2930241001231.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 937089825156 + 383911595236 = 968034^2 + 619606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1321001420392.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145096659 + ... + 145105762.

Almost surely, 2^{1321001420392} is an apocalyptic number.

It is an amenable number.

1321001420392 is a deficient number, since it is larger than the sum of its proper divisors (1160229287708).

1321001420392 is a wasteful number, since it uses less digits than its factorization.

1321001420392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290202996 (or 290202992 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 1321001420392 in words is "one trillion, three hundred twenty-one billion, one million, four hundred twenty thousand, three hundred ninety-two".