920447123 has 2 divisors, whose sum is σ = 920447124. Its totient is φ = 920447122.

The previous prime is 920447119. The next prime is 920447173. The reversal of 920447123 is 321744029.

It is a weak prime.

It is an emirp because it is prime and its reverse (321744029) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 920447123 - 2² = 920447119 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 920447123.

It is not a weakly prime, because it can be changed into another prime (920447173) by changing a digit.

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 as a sum of consecutive naturals, namely, 460223561 + 460223562.

It is an arithmetic number, because the mean of its divisors is an integer number (460223562).

Almost surely, 2^920447123 is an apocalyptic number.

920447123 is a deficient number, since it is larger than the sum of its proper divisors (1).

920447123 is an equidigital number, since it uses as much as digits as its factorization.

920447123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 920447123 is about 30338.8714852745. The cubic root of 920447123 is about 972.7463611478.

The spelling of 920447123 in words is "nine hundred twenty million, four hundred forty-seven thousand, one hundred twenty-three".