42828229 has 2 divisors, whose sum is σ = 42828230. Its totient is φ = 42828228.

The previous prime is 42828221. The next prime is 42828251. The reversal of 42828229 is 92282824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 643204 = 6495^2 + 802^2 .

It is a cyclic number.

It is not a de Polignac number, because 42828229 - 2³ = 42828221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42828221) 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, 21414114 + 21414115.

It is an arithmetic number, because the mean of its divisors is an integer number (21414115).

Almost surely, 2^42828229 is an apocalyptic number.

It is an amenable number.

42828229 is a deficient number, since it is larger than the sum of its proper divisors (1).

42828229 is an equidigital number, since it uses as much as digits as its factorization.

42828229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 42828229 is about 6544.3280021710. The cubic root of 42828229 is about 349.8726856671.

The spelling of 42828229 in words is "forty-two million, eight hundred twenty-eight thousand, two hundred twenty-nine".