42162120349 has 2 divisors, whose sum is σ = 42162120350. Its totient is φ = 42162120348.

The previous prime is 42162120313. The next prime is 42162120367. The reversal of 42162120349 is 94302126124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27895012324 + 14267108025 = 167018^2 + 119445^2 .

It is a cyclic number.

It is not a de Polignac number, because 42162120349 - 2²¹ = 42160023197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42162120149) 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, 21081060174 + 21081060175.

It is an arithmetic number, because the mean of its divisors is an integer number (21081060175).

Almost surely, 2^42162120349 is an apocalyptic number.

It is an amenable number.

42162120349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42162120349 is an equidigital number, since it uses as much as digits as its factorization.

42162120349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 42162120349 in words is "forty-two billion, one hundred sixty-two million, one hundred twenty thousand, three hundred forty-nine".