1042728923 has 2 divisors, whose sum is σ = 1042728924. Its totient is φ = 1042728922.

The previous prime is 1042728919. The next prime is 1042728941. The reversal of 1042728923 is 3298272401.

It is a weak prime.

It is an emirp because it is prime and its reverse (3298272401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042728923 - 2² = 1042728919 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042721923) 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, 521364461 + 521364462.

It is an arithmetic number, because the mean of its divisors is an integer number (521364462).

Almost surely, 2^1042728923 is an apocalyptic number.

1042728923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042728923 is an equidigital number, since it uses as much as digits as its factorization.

1042728923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1042728923 is about 32291.3134294658. The cubic root of 1042728923 is about 1014.0447946034.

The spelling of 1042728923 in words is "one billion, forty-two million, seven hundred twenty-eight thousand, nine hundred twenty-three".