123140352 has 72 divisors (see below), whose sum is σ = 330964480. Its totient is φ = 40642560.

The previous prime is 123140327. The next prime is 123140371. The reversal of 123140352 is 253041321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82977 + ... + 84447.

Almost surely, 2^123140352 is an apocalyptic number.

123140352 is a gapful number since it is divisible by the number (12) 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 123140352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165482240).

123140352 is an abundant number, since it is smaller than the sum of its proper divisors (207824128).

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

123140352 is a wasteful number, since it uses less digits than its factorization.

123140352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599 (or 1585 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 123140352 is about 11096.8622592154. The cubic root of 123140352 is about 497.5080705407.

Adding to 123140352 its reverse (253041321), we get a palindrome (376181673).

The spelling of 123140352 in words is "one hundred twenty-three million, one hundred forty thousand, three hundred fifty-two".