423433140040 has 64 divisors (see below), whose sum is σ = 1012214458800. Its totient is φ = 159112977408.

The previous prime is 423433139989. The next prime is 423433140043. The reversal of 423433140040 is 40041334324.

It can be written as a sum of positive squares in 8 ways, for example, as 388694890116 + 34738249924 = 623454^2 + 186382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 423433139990 and 423433140008.

It is not an unprimeable number, because it can be changed into a prime (423433140043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4889899 + ... + 4975738.

Almost surely, 2^423433140040 is an apocalyptic number.

423433140040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423433140040 is an abundant number, since it is smaller than the sum of its proper divisors (588781318760).

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

423433140040 is a wasteful number, since it uses less digits than its factorization.

423433140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9865714 (or 9865710 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 423433140040 its reverse (40041334324), we get a palindrome (463474474364).

The spelling of 423433140040 in words is "four hundred twenty-three billion, four hundred thirty-three million, one hundred forty thousand, forty".