420120165443 has 6 divisors (see below), whose sum is σ = 461784975372. Its totient is φ = 381927423020.

The previous prime is 420120165373. The next prime is 420120165457. The reversal of 420120165443 is 344561021024.

It is not a de Polignac number, because 420120165443 - 2²² = 420115971139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420120165463) 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 5 ways as a sum of consecutive naturals, for example, 1736033621 + ... + 1736033862.

It is an arithmetic number, because the mean of its divisors is an integer number (76964162562).

Almost surely, 2^420120165443 is an apocalyptic number.

420120165443 is a deficient number, since it is larger than the sum of its proper divisors (41664809929).

420120165443 is a wasteful number, since it uses less digits than its factorization.

420120165443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3472067505 (or 3472067494 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 420120165443 its reverse (344561021024), we get a palindrome (764681186467).

The spelling of 420120165443 in words is "four hundred twenty billion, one hundred twenty million, one hundred sixty-five thousand, four hundred forty-three".