140123500 has 96 divisors (see below), whose sum is σ = 339393600. Its totient is φ = 50112000.

The previous prime is 140123491. The next prime is 140123509. The reversal of 140123500 is 5321041.

It is an interprime number because it is at equal distance from previous prime (140123491) and next prime (140123509).

It is not an unprimeable number, because it can be changed into a prime (140123509) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 401326 + ... + 401674.

It is an arithmetic number, because the mean of its divisors is an integer number (3535350).

Almost surely, 2^140123500 is an apocalyptic number.

140123500 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 140123500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169696800).

140123500 is an abundant number, since it is smaller than the sum of its proper divisors (199270100).

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

140123500 is a wasteful number, since it uses less digits than its factorization.

140123500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 140123500 is about 11837.3772432917. The cubic root of 140123500 is about 519.4020493635.

Adding to 140123500 its reverse (5321041), we get a palindrome (145444541).

The spelling of 140123500 in words is "one hundred forty million, one hundred twenty-three thousand, five hundred".