42850472878069 has 2 divisors, whose sum is σ = 42850472878070. Its totient is φ = 42850472878068.

The previous prime is 42850472878021. The next prime is 42850472878091. The reversal of 42850472878069 is 96087827405824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32224502815569 + 10625970062500 = 5676663^2 + 3259750^2 .

It is a cyclic number.

It is not a de Polignac number, because 42850472878069 - 2³⁹ = 42300717064181 is a prime.

It is a super-2 number, since 2×42850472878069² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42850472877989 and 42850472878007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42850472878019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425236439034 + 21425236439035.

It is an arithmetic number, because the mean of its divisors is an integer number (21425236439035).

Almost surely, 2^{42850472878069} is an apocalyptic number.

It is an amenable number.

42850472878069 is a deficient number, since it is larger than the sum of its proper divisors (1).

42850472878069 is an equidigital number, since it uses as much as digits as its factorization.

42850472878069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 433520640, while the sum is 70.

The spelling of 42850472878069 in words is "forty-two trillion, eight hundred fifty billion, four hundred seventy-two million, eight hundred seventy-eight thousand, sixty-nine".