140820440 has 16 divisors (see below), whose sum is σ = 316846080. Its totient is φ = 56328160.

The previous prime is 140820403. The next prime is 140820451. The reversal of 140820440 is 44028041.

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, 1760216 + ... + 1760295.

It is an arithmetic number, because the mean of its divisors is an integer number (19802880).

Almost surely, 2^140820440 is an apocalyptic number.

140820440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140820440 is an abundant number, since it is smaller than the sum of its proper divisors (176025640).

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

140820440 is a wasteful number, since it uses less digits than its factorization.

140820440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520522 (or 3520518 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 140820440 is about 11866.7788384211. The cubic root of 140820440 is about 520.2617518493.

Adding to 140820440 its reverse (44028041), we get a palindrome (184848481).

The spelling of 140820440 in words is "one hundred forty million, eight hundred twenty thousand, four hundred forty".