123632340 has 96 divisors (see below), whose sum is σ = 384900096. Its totient is φ = 29445120.

The previous prime is 123632339. The next prime is 123632351. The reversal of 123632340 is 43236321.

It is a self number, because there is not a number n which added to its sum of digits gives 123632340.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 21624 + ... + 26736.

It is an arithmetic number, because the mean of its divisors is an integer number (4009376).

Almost surely, 2^123632340 is an apocalyptic number.

123632340 is a gapful number since it is divisible by the number (10) 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 123632340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192450048).

123632340 is an abundant number, since it is smaller than the sum of its proper divisors (261267756).

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

123632340 is a wasteful number, since it uses less digits than its factorization.

123632340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5169 (or 5167 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 123632340 is about 11119.0080492821. The cubic root of 123632340 is about 498.1697619653.

Adding to 123632340 its reverse (43236321), we get a palindrome (166868661).

The spelling of 123632340 in words is "one hundred twenty-three million, six hundred thirty-two thousand, three hundred forty".