42775457419 has 2 divisors, whose sum is σ = 42775457420. Its totient is φ = 42775457418.

The previous prime is 42775457381. The next prime is 42775457437. The reversal of 42775457419 is 91475457724.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42775457419 is a prime.

It is a super-2 number, since 2×42775457419² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42775457419.

It is not a weakly prime, because it can be changed into another prime (42775457479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387728709 + 21387728710.

It is an arithmetic number, because the mean of its divisors is an integer number (21387728710).

Almost surely, 2^42775457419 is an apocalyptic number.

42775457419 is a deficient number, since it is larger than the sum of its proper divisors (1).

42775457419 is an equidigital number, since it uses as much as digits as its factorization.

42775457419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9878400, while the sum is 55.

The spelling of 42775457419 in words is "forty-two billion, seven hundred seventy-five million, four hundred fifty-seven thousand, four hundred nineteen".