42450217279 has 2 divisors, whose sum is σ = 42450217280. Its totient is φ = 42450217278.

The previous prime is 42450217223. The next prime is 42450217301. The reversal of 42450217279 is 97271205424.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42450217279 - 2¹⁷ = 42450086207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42450217679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225108639 + 21225108640.

It is an arithmetic number, because the mean of its divisors is an integer number (21225108640).

Almost surely, 2^42450217279 is an apocalyptic number.

42450217279 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450217279 is an equidigital number, since it uses as much as digits as its factorization.

42450217279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 42450217279 in words is "forty-two billion, four hundred fifty million, two hundred seventeen thousand, two hundred seventy-nine".