420243344 has 20 divisors (see below), whose sum is σ = 824530560. Its totient is φ = 207461280.

The previous prime is 420243331. The next prime is 420243361. The reversal of 420243344 is 443342024.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164972 + ... + 167499.

It is an arithmetic number, because the mean of its divisors is an integer number (41226528).

Almost surely, 2^420243344 is an apocalyptic number.

It is an amenable number.

420243344 is a deficient number, since it is larger than the sum of its proper divisors (404287216).

420243344 is a wasteful number, since it uses less digits than its factorization.

420243344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332558 (or 332552 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

The square root of 420243344 is about 20499.8376578938. The cubic root of 420243344 is about 749.0318435092.

Adding to 420243344 its reverse (443342024), we get a palindrome (863585368).

The spelling of 420243344 in words is "four hundred twenty million, two hundred forty-three thousand, three hundred forty-four".