140421341531 has 4 divisors (see below), whose sum is σ = 140700509712. Its totient is φ = 140142173352.

The previous prime is 140421341497. The next prime is 140421341563. The reversal of 140421341531 is 135143124041.

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 140421341531 - 2¹⁴ = 140421325147 is a prime.

It is a super-2 number, since 2×140421341531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140421341494 and 140421341503.

It is not an unprimeable number, because it can be changed into a prime (140421341831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139583336 + ... + 139584341.

It is an arithmetic number, because the mean of its divisors is an integer number (35175127428).

Almost surely, 2^140421341531 is an apocalyptic number.

140421341531 is a deficient number, since it is larger than the sum of its proper divisors (279168181).

140421341531 is an equidigital number, since it uses as much as digits as its factorization.

140421341531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279168180.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 140421341531 its reverse (135143124041), we get a palindrome (275564465572).

The spelling of 140421341531 in words is "one hundred forty billion, four hundred twenty-one million, three hundred forty-one thousand, five hundred thirty-one".