42202229 has 2 divisors, whose sum is σ = 42202230. Its totient is φ = 42202228.

The previous prime is 42202213. The next prime is 42202231. The reversal of 42202229 is 92220224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41899729 + 302500 = 6473^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 42202229 - 2⁴ = 42202213 is a prime.

It is a Sophie Germain prime.

Together with 42202231, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42202289) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21101114 + 21101115.

It is an arithmetic number, because the mean of its divisors is an integer number (21101115).

Almost surely, 2^42202229 is an apocalyptic number.

It is an amenable number.

42202229 is a deficient number, since it is larger than the sum of its proper divisors (1).

42202229 is an equidigital number, since it uses as much as digits as its factorization.

42202229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42202229 is about 6496.3242683844. The cubic root of 42202229 is about 348.1596709697.

The spelling of 42202229 in words is "forty-two million, two hundred two thousand, two hundred twenty-nine".