42049780133 has 2 divisors, whose sum is σ = 42049780134. Its totient is φ = 42049780132.

The previous prime is 42049780111. The next prime is 42049780159. The reversal of 42049780133 is 33108794024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36319592929 + 5730187204 = 190577^2 + 75698^2 .

It is a cyclic number.

It is not a de Polignac number, because 42049780133 - 2²⁸ = 41781344677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42049780103) 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, 21024890066 + 21024890067.

It is an arithmetic number, because the mean of its divisors is an integer number (21024890067).

Almost surely, 2^42049780133 is an apocalyptic number.

It is an amenable number.

42049780133 is a deficient number, since it is larger than the sum of its proper divisors (1).

42049780133 is an equidigital number, since it uses as much as digits as its factorization.

42049780133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The spelling of 42049780133 in words is "forty-two billion, forty-nine million, seven hundred eighty thousand, one hundred thirty-three".