423656140 has 12 divisors (see below), whose sum is σ = 889677936. Its totient is φ = 169462448.

The previous prime is 423656131. The next prime is 423656141. The reversal of 423656140 is 41656324.

It is not an unprimeable number, because it can be changed into a prime (423656141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10591384 + ... + 10591423.

It is an arithmetic number, because the mean of its divisors is an integer number (74139828).

Almost surely, 2^423656140 is an apocalyptic number.

It is an amenable number.

423656140 is an abundant number, since it is smaller than the sum of its proper divisors (466021796).

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

423656140 is a wasteful number, since it uses less digits than its factorization.

423656140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21182816 (or 21182814 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 423656140 is about 20582.9089294978. The cubic root of 423656140 is about 751.0540084315.

The spelling of 423656140 in words is "four hundred twenty-three million, six hundred fifty-six thousand, one hundred forty".