420840343371 has 16 divisors (see below), whose sum is σ = 641978355200. Its totient is φ = 240218509248.

The previous prime is 420840343351. The next prime is 420840343381. The reversal of 420840343371 is 173343048024.

It is a happy number.

It is not a de Polignac number, because 420840343371 - 2⁹ = 420840342859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420840343351) 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, 10883866 + ... + 10922463.

It is an arithmetic number, because the mean of its divisors is an integer number (40123647200).

Almost surely, 2^420840343371 is an apocalyptic number.

420840343371 is a deficient number, since it is larger than the sum of its proper divisors (221138011829).

420840343371 is a wasteful number, since it uses less digits than its factorization.

420840343371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21807258.

The product of its (nonzero) digits is 193536, while the sum is 39.

The spelling of 420840343371 in words is "four hundred twenty billion, eight hundred forty million, three hundred forty-three thousand, three hundred seventy-one".