140423403021 has 8 divisors (see below), whose sum is σ = 204252222624. Its totient is φ = 85105092720.

The previous prime is 140423402887. The next prime is 140423403047. The reversal of 140423403021 is 120304324041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140423403021 - 2¹⁹ = 140422878733 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140423402982 and 140423403000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140423403121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2127627286 + ... + 2127627351.

It is an arithmetic number, because the mean of its divisors is an integer number (25531527828).

Almost surely, 2^140423403021 is an apocalyptic number.

140423403021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140423403021 is a deficient number, since it is larger than the sum of its proper divisors (63828819603).

140423403021 is a wasteful number, since it uses less digits than its factorization.

140423403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255254651.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 140423403021 its reverse (120304324041), we get a palindrome (260727727062).

The spelling of 140423403021 in words is "one hundred forty billion, four hundred twenty-three million, four hundred three thousand, twenty-one".