420134030023 has 2 divisors, whose sum is σ = 420134030024. Its totient is φ = 420134030022.

The previous prime is 420134030021. The next prime is 420134030027. The reversal of 420134030023 is 320030431024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420134030023 - 2¹ = 420134030021 is a prime.

Together with 420134030021, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 420134029976 and 420134030003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420134030021) 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, 210067015011 + 210067015012.

It is an arithmetic number, because the mean of its divisors is an integer number (210067015012).

Almost surely, 2^420134030023 is an apocalyptic number.

420134030023 is a deficient number, since it is larger than the sum of its proper divisors (1).

420134030023 is an equidigital number, since it uses as much as digits as its factorization.

420134030023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 420134030023 its reverse (320030431024), we get a palindrome (740164461047).

The spelling of 420134030023 in words is "four hundred twenty billion, one hundred thirty-four million, thirty thousand, twenty-three".