423240320040 has 32 divisors (see below), whose sum is σ = 1269720960480. Its totient is φ = 112864085312.

The previous prime is 423240320039. The next prime is 423240320047. The reversal of 423240320040 is 40023042324.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (423240320047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1763501214 + ... + 1763501453.

It is an arithmetic number, because the mean of its divisors is an integer number (39678780015).

Almost surely, 2^423240320040 is an apocalyptic number.

423240320040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423240320040 is an abundant number, since it is smaller than the sum of its proper divisors (846480640440).

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

423240320040 is a wasteful number, since it uses less digits than its factorization.

423240320040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527002681 (or 3527002677 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 423240320040 its reverse (40023042324), we get a palindrome (463263362364).

The spelling of 423240320040 in words is "four hundred twenty-three billion, two hundred forty million, three hundred twenty thousand, forty".