140012000013421 has 4 divisors (see below), whose sum is σ = 140012026872700. Its totient is φ = 140011973154144.

The previous prime is 140012000013409. The next prime is 140012000013433. The reversal of 140012000013421 is 124310000210041.

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

It is an interprime number because it is at equal distance from previous prime (140012000013409) and next prime (140012000013433).

It can be written as a sum of positive squares in 2 ways, for example, as 81414276356196 + 58597723657225 = 9022986^2 + 7654915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140012000013421 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 (140012000013451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2812626 + ... + 16968643.

It is an arithmetic number, because the mean of its divisors is an integer number (35003006718175).

Almost surely, 2^{140012000013421} is an apocalyptic number.

It is an amenable number.

140012000013421 is a deficient number, since it is larger than the sum of its proper divisors (26859279).

140012000013421 is an equidigital number, since it uses as much as digits as its factorization.

140012000013421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26859278.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 140012000013421 its reverse (124310000210041), we get a palindrome (264322000223462).

The spelling of 140012000013421 in words is "one hundred forty trillion, twelve billion, thirteen thousand, four hundred twenty-one".