1320020040043 has 4 divisors (see below), whose sum is σ = 1320111805320. Its totient is φ = 1319928274768.

The previous prime is 1320020040029. The next prime is 1320020040077. The reversal of 1320020040043 is 3400400200231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320020040043 - 2¹³ = 1320020031851 is a prime.

It is a super-2 number, since 2×1320020040043² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320020040043.

It is not an unprimeable number, because it can be changed into a prime (1320020040013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45861058 + ... + 45889831.

It is an arithmetic number, because the mean of its divisors is an integer number (330027951330).

Almost surely, 2^{1320020040043} is an apocalyptic number.

1320020040043 is a deficient number, since it is larger than the sum of its proper divisors (91765277).

1320020040043 is an equidigital number, since it uses as much as digits as its factorization.

1320020040043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91765276.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 1320020040043 its reverse (3400400200231), we get a palindrome (4720420240274).

The spelling of 1320020040043 in words is "one trillion, three hundred twenty billion, twenty million, forty thousand, forty-three".