42104203877 has 2 divisors, whose sum is σ = 42104203878. Its totient is φ = 42104203876.

The previous prime is 42104203861. The next prime is 42104203879. The reversal of 42104203877 is 77830240124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26521425316 + 15582778561 = 162854^2 + 124831^2 .

It is a cyclic number.

It is not a de Polignac number, because 42104203877 - 2⁴ = 42104203861 is a prime.

It is a super-2 number, since 2×42104203877² (a number of 22 digits) contains 22 as substring.

Together with 42104203879, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42104203877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42104203879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21052101938 + 21052101939.

It is an arithmetic number, because the mean of its divisors is an integer number (21052101939).

Almost surely, 2^42104203877 is an apocalyptic number.

It is an amenable number.

42104203877 is a deficient number, since it is larger than the sum of its proper divisors (1).

42104203877 is an equidigital number, since it uses as much as digits as its factorization.

42104203877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 38.

The spelling of 42104203877 in words is "forty-two billion, one hundred four million, two hundred three thousand, eight hundred seventy-seven".