42204893 has 2 divisors, whose sum is σ = 42204894. Its totient is φ = 42204892.

The previous prime is 42204823. The next prime is 42204917. The reversal of 42204893 is 39840224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 19518724 = 4763^2 + 4418^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42204893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42204803) 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, 21102446 + 21102447.

It is an arithmetic number, because the mean of its divisors is an integer number (21102447).

Almost surely, 2^42204893 is an apocalyptic number.

It is an amenable number.

42204893 is a deficient number, since it is larger than the sum of its proper divisors (1).

42204893 is an equidigital number, since it uses as much as digits as its factorization.

42204893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 42204893 is about 6496.5293041747. The cubic root of 42204893 is about 348.1669966321.

The spelling of 42204893 in words is "forty-two million, two hundred four thousand, eight hundred ninety-three".