423444232140 has 96 divisors (see below), whose sum is σ = 1193654375424. Its totient is φ = 112156112640.

The previous prime is 423444232093. The next prime is 423444232153. The reversal of 423444232140 is 41232444324.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30052177 + ... + 30066263.

It is an arithmetic number, because the mean of its divisors is an integer number (12433899744).

Almost surely, 2^423444232140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423444232140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (596827187712).

423444232140 is an abundant number, since it is smaller than the sum of its proper divisors (770210143284).

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

423444232140 is a wasteful number, since it uses less digits than its factorization.

423444232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447 (or 17445 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 33.

Adding to 423444232140 its reverse (41232444324), we get a palindrome (464676676464).

The spelling of 423444232140 in words is "four hundred twenty-three billion, four hundred forty-four million, two hundred thirty-two thousand, one hundred forty".