140253420605 has 8 divisors (see below), whose sum is σ = 168341590872. Its totient is φ = 112177745728.

The previous prime is 140253420589. The next prime is 140253420613. The reversal of 140253420605 is 506024352041.

It can be written as a sum of positive squares in 4 ways, for example, as 96305329561 + 43948091044 = 310331^2 + 209638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140253420605 - 2⁴ = 140253420589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3099134 + ... + 3144063.

It is an arithmetic number, because the mean of its divisors is an integer number (21042698859).

Almost surely, 2^140253420605 is an apocalyptic number.

It is an amenable number.

140253420605 is a deficient number, since it is larger than the sum of its proper divisors (28088170267).

140253420605 is an equidigital number, since it uses as much as digits as its factorization.

140253420605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247695.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 140253420605 its reverse (506024352041), we get a palindrome (646277772646).

The spelling of 140253420605 in words is "one hundred forty billion, two hundred fifty-three million, four hundred twenty thousand, six hundred five".