420340144443 has 16 divisors (see below), whose sum is σ = 590535849600. Its totient is φ = 265214839680.

The previous prime is 420340144381. The next prime is 420340144453. The reversal of 420340144443 is 344441043024.

It is not a de Polignac number, because 420340144443 - 2⁹ = 420340143931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420340144453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3596793 + ... + 3711818.

It is an arithmetic number, because the mean of its divisors is an integer number (36908490600).

Almost surely, 2^420340144443 is an apocalyptic number.

420340144443 is a deficient number, since it is larger than the sum of its proper divisors (170195705157).

420340144443 is a wasteful number, since it uses less digits than its factorization.

420340144443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7309642.

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 420340144443 its reverse (344441043024), we get a palindrome (764781187467).

The spelling of 420340144443 in words is "four hundred twenty billion, three hundred forty million, one hundred forty-four thousand, four hundred forty-three".