140402323443 has 4 divisors (see below), whose sum is σ = 187203097928. Its totient is φ = 93601548960.

The previous prime is 140402323409. The next prime is 140402323447. The reversal of 140402323443 is 344323204041.

It is a happy number.

140402323443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140402323443 - 2⁶ = 140402323379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140402323443.

It is not an unprimeable number, because it can be changed into a prime (140402323447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23400387238 + ... + 23400387243.

It is an arithmetic number, because the mean of its divisors is an integer number (46800774482).

Almost surely, 2^140402323443 is an apocalyptic number.

140402323443 is a deficient number, since it is larger than the sum of its proper divisors (46800774485).

140402323443 is an equidigital number, since it uses as much as digits as its factorization.

140402323443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46800774484.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 140402323443 its reverse (344323204041), we get a palindrome (484725527484).

The spelling of 140402323443 in words is "one hundred forty billion, four hundred two million, three hundred twenty-three thousand, four hundred forty-three".