945842321 has 2 divisors, whose sum is σ = 945842322. Its totient is φ = 945842320.

The previous prime is 945842299. The next prime is 945842329. The reversal of 945842321 is 123248549.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926350096 + 19492225 = 30436^2 + 4415^2 .

It is an emirp because it is prime and its reverse (123248549) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 945842321 - 2²² = 941648017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (945842329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 472921160 + 472921161.

It is an arithmetic number, because the mean of its divisors is an integer number (472921161).

Almost surely, 2^945842321 is an apocalyptic number.

It is an amenable number.

945842321 is a deficient number, since it is larger than the sum of its proper divisors (1).

945842321 is an equidigital number, since it uses as much as digits as its factorization.

945842321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 945842321 is about 30754.5495983928. The cubic root of 945842321 is about 981.6113713225.

The spelling of 945842321 in words is "nine hundred forty-five million, eight hundred forty-two thousand, three hundred twenty-one".