140223421938 has 32 divisors (see below), whose sum is σ = 298073318400. Its totient is φ = 43851163536.

The previous prime is 140223421909. The next prime is 140223421939. The reversal of 140223421938 is 839124322041.

It is a junction number, because it is equal to n+sod(n) for n = 140223421896 and 140223421905.

It is not an unprimeable number, because it can be changed into a prime (140223421939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5959278 + ... + 5982761.

It is an arithmetic number, because the mean of its divisors is an integer number (9314791200).

Almost surely, 2^140223421938 is an apocalyptic number.

140223421938 is an abundant number, since it is smaller than the sum of its proper divisors (157849896462).

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

140223421938 is a wasteful number, since it uses less digits than its factorization.

140223421938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11942166.

The product of its (nonzero) digits is 82944, while the sum is 39.

Adding to 140223421938 its reverse (839124322041), we get a palindrome (979347743979).

The spelling of 140223421938 in words is "one hundred forty billion, two hundred twenty-three million, four hundred twenty-one thousand, nine hundred thirty-eight".