140320438 has 8 divisors (see below), whose sum is σ = 215375688. Its totient is φ = 68528544.

The previous prime is 140320429. The next prime is 140320471. The reversal of 140320438 is 834023041.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 815731 + ... + 815902.

It is an arithmetic number, because the mean of its divisors is an integer number (26921961).

Almost surely, 2^140320438 is an apocalyptic number.

140320438 is a deficient number, since it is larger than the sum of its proper divisors (75055250).

140320438 is a wasteful number, since it uses less digits than its factorization.

140320438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631678.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 140320438 is about 11845.6928037156. The cubic root of 140320438 is about 519.6452684206.

Adding to 140320438 its reverse (834023041), we get a palindrome (974343479).

The spelling of 140320438 in words is "one hundred forty million, three hundred twenty thousand, four hundred thirty-eight".