423040032 has 36 divisors (see below), whose sum is σ = 1203020910. Its totient is φ = 141013248.

The previous prime is 423040031. The next prime is 423040067. The reversal of 423040032 is 230040324.

423040032 is a `hidden beast` number, since 4 + 230 + 400 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 409819536 + 13220496 = 20244^2 + 3636^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×423040032² = 357925737349122048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 423039987 and 423040014.

It is not an unprimeable number, because it can be changed into a prime (423040031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734157 + ... + 734732.

Almost surely, 2^423040032 is an apocalyptic number.

It is an amenable number.

423040032 is an abundant number, since it is smaller than the sum of its proper divisors (779980878).

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

423040032 is a wasteful number, since it uses less digits than its factorization.

423040032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468905 (or 1468894 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 423040032 is about 20567.9369894017. The cubic root of 423040032 is about 750.6897547900.

Adding to 423040032 its reverse (230040324), we get a palindrome (653080356).

The spelling of 423040032 in words is "four hundred twenty-three million, forty thousand, thirty-two".