140223433020421 has 4 divisors (see below), whose sum is σ = 140227989754572. Its totient is φ = 140218876286272.

The previous prime is 140223433020413. The next prime is 140223433020427. The reversal of 140223433020421 is 124020334322041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45277624188225 + 94945808832196 = 6728865^2 + 9744014^2 .

It is a cyclic number.

It is not a de Polignac number, because 140223433020421 - 2³ = 140223433020413 is a prime.

It is a super-2 number, since 2×140223433020421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140223433020427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2278320916 + ... + 2278382461.

It is an arithmetic number, because the mean of its divisors is an integer number (35056997438643).

Almost surely, 2^{140223433020421} is an apocalyptic number.

It is an amenable number.

140223433020421 is a deficient number, since it is larger than the sum of its proper divisors (4556734151).

140223433020421 is an equidigital number, since it uses as much as digits as its factorization.

140223433020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556734150.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 140223433020421 its reverse (124020334322041), we get a palindrome (264243767342462).

The spelling of 140223433020421 in words is "one hundred forty trillion, two hundred twenty-three billion, four hundred thirty-three million, twenty thousand, four hundred twenty-one".