42225349 has 2 divisors, whose sum is σ = 42225350. Its totient is φ = 42225348.

The previous prime is 42225347. The next prime is 42225371. The reversal of 42225349 is 94352224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22137025 + 20088324 = 4705^2 + 4482^2 .

It is a cyclic number.

It is not a de Polignac number, because 42225349 - 2¹ = 42225347 is a prime.

Together with 42225347, it forms a pair of twin primes.

It is equal to p_2560486 and since 42225349 and 2560486 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42225349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42225347) 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, 21112674 + 21112675.

It is an arithmetic number, because the mean of its divisors is an integer number (21112675).

Almost surely, 2^42225349 is an apocalyptic number.

It is an amenable number.

42225349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42225349 is an equidigital number, since it uses as much as digits as its factorization.

42225349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 31.

The square root of 42225349 is about 6498.1034925584. The cubic root of 42225349 is about 348.2232377709.

The spelling of 42225349 in words is "forty-two million, two hundred twenty-five thousand, three hundred forty-nine".