140442320 has 40 divisors (see below), whose sum is σ = 327039336. Its totient is φ = 56089088.

The previous prime is 140442299. The next prime is 140442359. The reversal of 140442320 is 23244041.

140442320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 824464 + 139617856 = 908^2 + 11816^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 140442292 and 140442301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80174 + ... + 81906.

Almost surely, 2^140442320 is an apocalyptic number.

140442320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140442320 is an abundant number, since it is smaller than the sum of its proper divisors (186597016).

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

140442320 is a wasteful number, since it uses less digits than its factorization.

140442320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2759 (or 2753 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140442320 is about 11850.8362574124. The cubic root of 140442320 is about 519.7956790966.

Adding to 140442320 its reverse (23244041), we get a palindrome (163686361).

The spelling of 140442320 in words is "one hundred forty million, four hundred forty-two thousand, three hundred twenty".