140502123544421 has 4 divisors (see below), whose sum is σ = 140514423487872. Its totient is φ = 140489823600972.

The previous prime is 140502123544361. The next prime is 140502123544487. The reversal of 140502123544421 is 124445321205041.

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 140502123544421 - 2¹⁴ = 140502123528037 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 (140502123144421) 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, 6149954591 + ... + 6149977436.

It is an arithmetic number, because the mean of its divisors is an integer number (35128605871968).

Almost surely, 2^{140502123544421} is an apocalyptic number.

It is an amenable number.

140502123544421 is a deficient number, since it is larger than the sum of its proper divisors (12299943451).

140502123544421 is a wasteful number, since it uses less digits than its factorization.

140502123544421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299943450.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 140502123544421 its reverse (124445321205041), we get a palindrome (264947444749462).

The spelling of 140502123544421 in words is "one hundred forty trillion, five hundred two billion, one hundred twenty-three million, five hundred forty-four thousand, four hundred twenty-one".