140012012010421 has 4 divisors (see below), whose sum is σ = 141784315960000. Its totient is φ = 138239708060844.

The previous prime is 140012012010391. The next prime is 140012012010443. The reversal of 140012012010421 is 124010210210041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 140012012010421 - 2⁵ = 140012012010389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140012012010121) 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, 886151974671 + ... + 886151974828.

It is an arithmetic number, because the mean of its divisors is an integer number (35446078990000).

Almost surely, 2^{140012012010421} is an apocalyptic number.

It is an amenable number.

140012012010421 is a deficient number, since it is larger than the sum of its proper divisors (1772303949579).

140012012010421 is an equidigital number, since it uses as much as digits as its factorization.

140012012010421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772303949578.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 140012012010421 its reverse (124010210210041), we get a palindrome (264022222220462).

The spelling of 140012012010421 in words is "one hundred forty trillion, twelve billion, twelve million, ten thousand, four hundred twenty-one".