140138832 has 80 divisors (see below), whose sum is σ = 391472960. Its totient is φ = 43047936.

The previous prime is 140138809. The next prime is 140138857. The reversal of 140138832 is 238831041.

It is a self number, because there is not a number n which added to its sum of digits gives 140138832.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 31668 + ... + 35820.

It is an arithmetic number, because the mean of its divisors is an integer number (4893412).

Almost surely, 2^140138832 is an apocalyptic number.

140138832 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 140138832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195736480).

140138832 is an abundant number, since it is smaller than the sum of its proper divisors (251334128).

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

140138832 is a wasteful number, since it uses less digits than its factorization.

140138832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4214 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 140138832 is about 11838.0248352502. The cubic root of 140138832 is about 519.4209926095.

Adding to 140138832 its reverse (238831041), we get a palindrome (378969873).

The spelling of 140138832 in words is "one hundred forty million, one hundred thirty-eight thousand, eight hundred thirty-two".