420400424043 has 24 divisors (see below), whose sum is σ = 615959076096. Its totient is φ = 276247162800.

The previous prime is 420400424023. The next prime is 420400424047. The reversal of 420400424043 is 340424004024.

It is a happy number.

It is not a de Polignac number, because 420400424043 - 2⁶ = 420400423979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420400423998 and 420400424016.

It is not an unprimeable number, because it can be changed into a prime (420400424047) 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 in 23 ways as a sum of consecutive naturals, for example, 2412378 + ... + 2580768.

It is an arithmetic number, because the mean of its divisors is an integer number (25664961504).

Almost surely, 2^420400424043 is an apocalyptic number.

420400424043 is a deficient number, since it is larger than the sum of its proper divisors (195558652053).

420400424043 is a wasteful number, since it uses less digits than its factorization.

420400424043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172375 (or 172372 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 420400424043 its reverse (340424004024), we get a palindrome (760824428067).

The spelling of 420400424043 in words is "four hundred twenty billion, four hundred million, four hundred twenty-four thousand, forty-three".