140420444321323 has 4 divisors (see below), whose sum is σ = 140713597650240. Its totient is φ = 140127290992408.

The previous prime is 140420444321279. The next prime is 140420444321351. The reversal of 140420444321323 is 323123444024041.

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

It is a cyclic number.

It is not a de Polignac number, because 140420444321323 - 2¹⁷ = 140420444190251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140420444321363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146576663740 + ... + 146576664697.

It is an arithmetic number, because the mean of its divisors is an integer number (35178399412560).

Almost surely, 2^{140420444321323} is an apocalyptic number.

140420444321323 is a deficient number, since it is larger than the sum of its proper divisors (293153328917).

140420444321323 is an equidigital number, since it uses as much as digits as its factorization.

140420444321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293153328916.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 140420444321323 its reverse (323123444024041), we get a palindrome (463543888345364).

The spelling of 140420444321323 in words is "one hundred forty trillion, four hundred twenty billion, four hundred forty-four million, three hundred twenty-one thousand, three hundred twenty-three".