42094354261 has 2 divisors, whose sum is σ = 42094354262. Its totient is φ = 42094354260.

The previous prime is 42094354249. The next prime is 42094354387. The reversal of 42094354261 is 16245349024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40036008100 + 2058346161 = 200090^2 + 45369^2 .

It is a cyclic number.

It is not a de Polignac number, because 42094354261 - 2¹¹ = 42094352213 is a prime.

It is a super-2 number, since 2×42094354261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42094354201) 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, 21047177130 + 21047177131.

It is an arithmetic number, because the mean of its divisors is an integer number (21047177131).

Almost surely, 2^42094354261 is an apocalyptic number.

It is an amenable number.

42094354261 is a deficient number, since it is larger than the sum of its proper divisors (1).

42094354261 is an equidigital number, since it uses as much as digits as its factorization.

42094354261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 42094354261 in words is "forty-two billion, ninety-four million, three hundred fifty-four thousand, two hundred sixty-one".