140012012023421 has 16 divisors (see below), whose sum is σ = 147183115322880. Its totient is φ = 132931637010480.

The previous prime is 140012012023397. The next prime is 140012012023439. The reversal of 140012012023421 is 124320210210041.

It is not a de Polignac number, because 140012012023421 - 2³⁸ = 139737134116477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140012012023021) 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 15 ways as a sum of consecutive naturals, for example, 9618686 + ... + 19301376.

It is an arithmetic number, because the mean of its divisors is an integer number (9198944707680).

Almost surely, 2^{140012012023421} is an apocalyptic number.

It is an amenable number.

140012012023421 is a deficient number, since it is larger than the sum of its proper divisors (7171103299459).

140012012023421 is a wasteful number, since it uses less digits than its factorization.

140012012023421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9687376.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 140012012023421 its reverse (124320210210041), we get a palindrome (264332222233462).

The spelling of 140012012023421 in words is "one hundred forty trillion, twelve billion, twelve million, twenty-three thousand, four hundred twenty-one".