320120420407 has 2 divisors, whose sum is σ = 320120420408. Its totient is φ = 320120420406.

The previous prime is 320120420387. The next prime is 320120420429. The reversal of 320120420407 is 704024021023.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320120420407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320120420467) 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 as a sum of consecutive naturals, namely, 160060210203 + 160060210204.

It is an arithmetic number, because the mean of its divisors is an integer number (160060210204).

Almost surely, 2^320120420407 is an apocalyptic number.

320120420407 is a deficient number, since it is larger than the sum of its proper divisors (1).

320120420407 is an equidigital number, since it uses as much as digits as its factorization.

320120420407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 320120420407 in words is "three hundred twenty billion, one hundred twenty million, four hundred twenty thousand, four hundred seven".