120420420137 has 2 divisors, whose sum is σ = 120420420138. Its totient is φ = 120420420136.

The previous prime is 120420420119. The next prime is 120420420161. The reversal of 120420420137 is 731024024021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120009587776 + 410832361 = 346424^2 + 20269^2 .

It is a cyclic number.

It is not a de Polignac number, because 120420420137 - 2²⁸ = 120151984681 is a prime.

It is not a weakly prime, because it can be changed into another prime (120420420937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60210210068 + 60210210069.

It is an arithmetic number, because the mean of its divisors is an integer number (60210210069).

Almost surely, 2^120420420137 is an apocalyptic number.

It is an amenable number.

120420420137 is a deficient number, since it is larger than the sum of its proper divisors (1).

120420420137 is an equidigital number, since it uses as much as digits as its factorization.

120420420137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 120420420137 its reverse (731024024021), we get a palindrome (851444444158).

The spelling of 120420420137 in words is "one hundred twenty billion, four hundred twenty million, four hundred twenty thousand, one hundred thirty-seven".