420120420149 has 2 divisors, whose sum is σ = 420120420150. Its totient is φ = 420120420148.

The previous prime is 420120420107. The next prime is 420120420157. The reversal of 420120420149 is 941024021024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252814879249 + 167305540900 = 502807^2 + 409030^2 .

It is a cyclic number.

It is not a de Polignac number, because 420120420149 - 2²⁸ = 419851984693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420120420179) 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, 210060210074 + 210060210075.

It is an arithmetic number, because the mean of its divisors is an integer number (210060210075).

Almost surely, 2^420120420149 is an apocalyptic number.

It is an amenable number.

420120420149 is a deficient number, since it is larger than the sum of its proper divisors (1).

420120420149 is an equidigital number, since it uses as much as digits as its factorization.

420120420149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 420120420149 in words is "four hundred twenty billion, one hundred twenty million, four hundred twenty thousand, one hundred forty-nine".