140738 has 8 divisors (see below), whose sum is σ = 227388. Its totient is φ = 64944.

The previous prime is 140731. The next prime is 140741. The reversal of 140738 is 837041.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 124609 + 16129 = 353^2 + 127^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140731) by changing a digit.

140738 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2681 + ... + 2732.

2¹⁴⁰⁷³⁸ is an apocalyptic number.

140738 is a deficient number, since it is larger than the sum of its proper divisors (86650).

140738 is a wasteful number, since it uses less digits than its factorization.

140738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5428.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 140738 is about 375.1506364116. The cubic root of 140738 is about 52.0160207047.

Subtracting from 140738 its sum of digits (23), we obtain a triangular number (140715 = T₅₃₀).

Adding to 140738 its reverse (837041), we get a palindrome (977779).

It can be divided in two parts, 140 and 738, that added together give a palindrome (878).

The spelling of 140738 in words is "one hundred forty thousand, seven hundred thirty-eight".