123532330440 has 32 divisors (see below), whose sum is σ = 370596991680. Its totient is φ = 32941954752.

The previous prime is 123532330433. The next prime is 123532330463. The reversal of 123532330440 is 44033235321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123532330398 and 123532330407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514717924 + ... + 514718163.

It is an arithmetic number, because the mean of its divisors is an integer number (11581155990).

Almost surely, 2^123532330440 is an apocalyptic number.

123532330440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123532330440 is an abundant number, since it is smaller than the sum of its proper divisors (247064661240).

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

123532330440 is a wasteful number, since it uses less digits than its factorization.

123532330440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029436101 (or 1029436097 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 123532330440 its reverse (44033235321), we get a palindrome (167565565761).

The spelling of 123532330440 in words is "one hundred twenty-three billion, five hundred thirty-two million, three hundred thirty thousand, four hundred forty".