140509000 has 64 divisors (see below), whose sum is σ = 333590400. Its totient is φ = 55384000.

The previous prime is 140508997. The next prime is 140509007. The reversal of 140509000 is 905041.

It is not an unprimeable number, because it can be changed into a prime (140509007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 70011 + ... + 71989.

It is an arithmetic number, because the mean of its divisors is an integer number (5212350).

Almost surely, 2^140509000 is an apocalyptic number.

140509000 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 140509000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166795200).

140509000 is an abundant number, since it is smaller than the sum of its proper divisors (193081400).

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

140509000 is a wasteful number, since it uses less digits than its factorization.

140509000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 140509000 is about 11853.6492271368. The cubic root of 140509000 is about 519.8779299262.

The spelling of 140509000 in words is "one hundred forty million, five hundred nine thousand".