420120143 has 2 divisors, whose sum is σ = 420120144. Its totient is φ = 420120142.

The previous prime is 420120137. The next prime is 420120157. The reversal of 420120143 is 341021024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420120143 - 2⁶ = 420120079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420120193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210060071 + 210060072.

It is an arithmetic number, because the mean of its divisors is an integer number (210060072).

Almost surely, 2^420120143 is an apocalyptic number.

420120143 is a deficient number, since it is larger than the sum of its proper divisors (1).

420120143 is an equidigital number, since it uses as much as digits as its factorization.

420120143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420120143 is about 20496.8325113906. The cubic root of 420120143 is about 748.9586395010.

Adding to 420120143 its reverse (341021024), we get a palindrome (761141167).

The spelling of 420120143 in words is "four hundred twenty million, one hundred twenty thousand, one hundred forty-three".