42448279 has 2 divisors, whose sum is σ = 42448280. Its totient is φ = 42448278.

The previous prime is 42448187. The next prime is 42448309. The reversal of 42448279 is 97284424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42448279 - 2⁷ = 42448151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42448979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21224139 + 21224140.

It is an arithmetic number, because the mean of its divisors is an integer number (21224140).

Almost surely, 2^42448279 is an apocalyptic number.

42448279 is a deficient number, since it is larger than the sum of its proper divisors (1).

42448279 is an equidigital number, since it uses as much as digits as its factorization.

42448279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The square root of 42448279 is about 6515.2343779790. The cubic root of 42448279 is about 348.8349808110.

The spelling of 42448279 in words is "forty-two million, four hundred forty-eight thousand, two hundred seventy-nine".