42232249 has 2 divisors, whose sum is σ = 42232250. Its totient is φ = 42232248.

The previous prime is 42232247. The next prime is 42232271. The reversal of 42232249 is 94223224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37124649 + 5107600 = 6093^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 42232249 - 2¹ = 42232247 is a prime.

Together with 42232247, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42232243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21116124 + 21116125.

It is an arithmetic number, because the mean of its divisors is an integer number (21116125).

Almost surely, 2^42232249 is an apocalyptic number.

It is an amenable number.

42232249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42232249 is an equidigital number, since it uses as much as digits as its factorization.

42232249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 28.

The square root of 42232249 is about 6498.6343950095. The cubic root of 42232249 is about 348.2422043359.

The spelling of 42232249 in words is "forty-two million, two hundred thirty-two thousand, two hundred forty-nine".