140502141523 has 4 divisors (see below), whose sum is σ = 140503785520. Its totient is φ = 140500497528.

The previous prime is 140502141463. The next prime is 140502141601. The reversal of 140502141523 is 325141205041.

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

It is a cyclic number.

It is not a de Polignac number, because 140502141523 - 2⁹ = 140502141011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140502141491 and 140502141500.

It is not an unprimeable number, because it can be changed into a prime (140502141223) 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, 686340 + ... + 867217.

It is an arithmetic number, because the mean of its divisors is an integer number (35125946380).

Almost surely, 2^140502141523 is an apocalyptic number.

140502141523 is a deficient number, since it is larger than the sum of its proper divisors (1643997).

140502141523 is an equidigital number, since it uses as much as digits as its factorization.

140502141523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643996.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 140502141523 its reverse (325141205041), we get a palindrome (465643346564).

The spelling of 140502141523 in words is "one hundred forty billion, five hundred two million, one hundred forty-one thousand, five hundred twenty-three".