2420420161 has 2 divisors, whose sum is σ = 2420420162. Its totient is φ = 2420420160.

The previous prime is 2420420153. The next prime is 2420420213. The reversal of 2420420161 is 1610240242.

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., 2397081600 + 23338561 = 48960^2 + 4831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2420420161 - 2³ = 2420420153 is a prime.

It is not a weakly prime, because it can be changed into another prime (2420420131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210210080 + 1210210081.

It is an arithmetic number, because the mean of its divisors is an integer number (1210210081).

Almost surely, 2^2420420161 is an apocalyptic number.

It is an amenable number.

2420420161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2420420161 is an equidigital number, since it uses as much as digits as its factorization.

2420420161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 2420420161 is about 49197.7658130936. The cubic root of 2420420161 is about 1342.6523838045.

The spelling of 2420420161 in words is "two billion, four hundred twenty million, four hundred twenty thousand, one hundred sixty-one".