140840320 has 32 divisors (see below), whose sum is σ = 336697920. Its totient is φ = 56335872.

The previous prime is 140840309. The next prime is 140840353. The reversal of 140840320 is 23048041.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 140840291 and 140840300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109392 + ... + 110671.

It is an arithmetic number, because the mean of its divisors is an integer number (10521810).

Almost surely, 2^140840320 is an apocalyptic number.

140840320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140840320 is an abundant number, since it is smaller than the sum of its proper divisors (195857600).

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

140840320 is an equidigital number, since it uses as much as digits as its factorization.

140840320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220082 (or 220070 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 140840320 is about 11867.6164413921. The cubic root of 140840320 is about 520.2862329473.

Adding to 140840320 its reverse (23048041), we get a palindrome (163888361).

The spelling of 140840320 in words is "one hundred forty million, eight hundred forty thousand, three hundred twenty".