423641232 has 160 divisors (see below), whose sum is σ = 1450383360. Its totient is φ = 115758720.

The previous prime is 423641191. The next prime is 423641237. The reversal of 423641232 is 232146324.

423641232 = T₂₃₃ + T₂₃₄ + ... + T₁₃₆₆.

423641232 is a `hidden beast` number, since 423 + 6 + 4 + 1 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 423641196 and 423641205.

It is not an unprimeable number, because it can be changed into a prime (423641237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66507 + ... + 72597.

It is an arithmetic number, because the mean of its divisors is an integer number (9064896).

Almost surely, 2^423641232 is an apocalyptic number.

423641232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423641232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725191680).

423641232 is an abundant number, since it is smaller than the sum of its proper divisors (1026742128).

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

423641232 is a wasteful number, since it uses less digits than its factorization.

423641232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6138 (or 6126 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 423641232 is about 20582.5467811930. The cubic root of 423641232 is about 751.0451987362.

Adding to 423641232 its reverse (232146324), we get a palindrome (655787556).

The spelling of 423641232 in words is "four hundred twenty-three million, six hundred forty-one thousand, two hundred thirty-two".