140019938 has 4 divisors (see below), whose sum is σ = 210029910. Its totient is φ = 70009968.

The previous prime is 140019931. The next prime is 140019941. The reversal of 140019938 is 839910041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 140019889 + 49 = 11833^2 + 7^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140019898 and 140019907.

It is not an unprimeable number, because it can be changed into a prime (140019931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35004983 + ... + 35004986.

Almost surely, 2^140019938 is an apocalyptic number.

140019938 is a deficient number, since it is larger than the sum of its proper divisors (70009972).

140019938 is an equidigital number, since it uses as much as digits as its factorization.

140019938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70009971.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 140019938 is about 11833.0020704807. The cubic root of 140019938 is about 519.2740585263.

Adding to 140019938 its reverse (839910041), we get a palindrome (979929979).

The spelling of 140019938 in words is "one hundred forty million, nineteen thousand, nine hundred thirty-eight".