140320137 has 8 divisors (see below), whose sum is σ = 191444704. Its totient is φ = 91371168.

The previous prime is 140320109. The next prime is 140320139. The reversal of 140320137 is 731023041.

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

It is not a de Polignac number, because 140320137 - 2¹⁸ = 140057993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140320139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543748 + ... + 544005.

It is an arithmetic number, because the mean of its divisors is an integer number (23930588).

Almost surely, 2^140320137 is an apocalyptic number.

It is an amenable number.

140320137 is a deficient number, since it is larger than the sum of its proper divisors (51124567).

140320137 is a wasteful number, since it uses less digits than its factorization.

140320137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087799.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 140320137 is about 11845.6800986689. The cubic root of 140320137 is about 519.6448968584.

Adding to 140320137 its reverse (731023041), we get a palindrome (871343178).

The spelling of 140320137 in words is "one hundred forty million, three hundred twenty thousand, one hundred thirty-seven".