42442798428677 has 2 divisors, whose sum is σ = 42442798428678. Its totient is φ = 42442798428676.

The previous prime is 42442798428647. The next prime is 42442798428697. The reversal of 42442798428677 is 77682489724424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23359058600641 + 19083739828036 = 4833121^2 + 4368494^2 .

It is a cyclic number.

It is not a de Polignac number, because 42442798428677 - 2⁸ = 42442798428421 is a prime.

It is a super-2 number, since 2×42442798428677² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42442798428607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21221399214338 + 21221399214339.

It is an arithmetic number, because the mean of its divisors is an integer number (21221399214339).

Almost surely, 2^{42442798428677} is an apocalyptic number.

It is an amenable number.

42442798428677 is a deficient number, since it is larger than the sum of its proper divisors (1).

42442798428677 is an equidigital number, since it uses as much as digits as its factorization.

42442798428677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2427715584, while the sum is 74.

The spelling of 42442798428677 in words is "forty-two trillion, four hundred forty-two billion, seven hundred ninety-eight million, four hundred twenty-eight thousand, six hundred seventy-seven".