420344403430 has 16 divisors (see below), whose sum is σ = 864708487200. Its totient is φ = 144118081152.

The previous prime is 420344403419. The next prime is 420344403433. The reversal of 420344403430 is 34304443024.

It is a junction number, because it is equal to n+sod(n) for n = 420344403392 and 420344403401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420344403433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3002459955 + ... + 3002460094.

It is an arithmetic number, because the mean of its divisors is an integer number (54044280450).

Almost surely, 2^420344403430 is an apocalyptic number.

420344403430 is an abundant number, since it is smaller than the sum of its proper divisors (444364083770).

420344403430 is a wasteful number, since it uses less digits than its factorization.

420344403430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6004920063.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 420344403430 its reverse (34304443024), we get a palindrome (454648846454).

The spelling of 420344403430 in words is "four hundred twenty billion, three hundred forty-four million, four hundred three thousand, four hundred thirty".