423421140 has 48 divisors (see below), whose sum is σ = 1186641792. Its totient is φ = 112811136.

The previous prime is 423421139. The next prime is 423421153. The reversal of 423421140 is 41124324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84382 + ... + 89258.

It is an arithmetic number, because the mean of its divisors is an integer number (24721704).

Almost surely, 2^423421140 is an apocalyptic number.

It is an amenable number.

423421140 is an abundant number, since it is smaller than the sum of its proper divisors (763220652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423421140 is a wasteful number, since it uses less digits than its factorization.

423421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336 (or 6334 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 423421140 is about 20577.1995179130. The cubic root of 423421140 is about 750.9151140786.

Adding to 423421140 its reverse (41124324), we get a palindrome (464545464).

The spelling of 423421140 in words is "four hundred twenty-three million, four hundred twenty-one thousand, one hundred forty".