42255329 has 2 divisors, whose sum is σ = 42255330. Its totient is φ = 42255328.

The previous prime is 42255307. The next prime is 42255427. The reversal of 42255329 is 92355224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 5329 = 6500^2 + 73^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42255329 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42255295 and 42255304.

It is not a weakly prime, because it can be changed into another prime (42225329) 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, 21127664 + 21127665.

It is an arithmetic number, because the mean of its divisors is an integer number (21127665).

Almost surely, 2^42255329 is an apocalyptic number.

It is an amenable number.

42255329 is a deficient number, since it is larger than the sum of its proper divisors (1).

42255329 is an equidigital number, since it uses as much as digits as its factorization.

42255329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21600, while the sum is 32.

The square root of 42255329 is about 6500.4099101518. The cubic root of 42255329 is about 348.3056311132.

It can be divided in two parts, 4225 and 5329, that multiplied together give a square (22515025 = 4745²).

The spelling of 42255329 in words is "forty-two million, two hundred fifty-five thousand, three hundred twenty-nine".