140325640 has 128 divisors (see below), whose sum is σ = 409248000. Its totient is φ = 42052608.

The previous prime is 140325631. The next prime is 140325683. The reversal of 140325640 is 46523041.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68146 + ... + 70174.

It is an arithmetic number, because the mean of its divisors is an integer number (3197250).

Almost surely, 2^140325640 is an apocalyptic number.

140325640 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 140325640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204624000).

140325640 is an abundant number, since it is smaller than the sum of its proper divisors (268922360).

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

140325640 is a wasteful number, since it uses less digits than its factorization.

140325640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 140325640 is about 11845.9123751613. The cubic root of 140325640 is about 519.6516898214.

Adding to 140325640 its reverse (46523041), we get a palindrome (186848681).

The spelling of 140325640 in words is "one hundred forty million, three hundred twenty-five thousand, six hundred forty".