42950000689 has 2 divisors, whose sum is σ = 42950000690. Its totient is φ = 42950000688.

The previous prime is 42950000641. The next prime is 42950000719. The reversal of 42950000689 is 98600005924.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41887762225 + 1062238464 = 204665^2 + 32592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42950000689 is a prime.

It is not a weakly prime, because it can be changed into another prime (42950000609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21475000344 + 21475000345.

It is an arithmetic number, because the mean of its divisors is an integer number (21475000345).

Almost surely, 2^42950000689 is an apocalyptic number.

It is an amenable number.

42950000689 is a deficient number, since it is larger than the sum of its proper divisors (1).

42950000689 is an equidigital number, since it uses as much as digits as its factorization.

42950000689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 42950000689 in words is "forty-two billion, nine hundred fifty million, six hundred eighty-nine", and thus it is an aban number.