140104230521 has 4 divisors (see below), whose sum is σ = 140338128000. Its totient is φ = 139870333044.

The previous prime is 140104230467. The next prime is 140104230557. The reversal of 140104230521 is 125032401041.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125032401041 = 73 ⋅1712772617.

It is a cyclic number.

It is not a de Polignac number, because 140104230521 - 2²⁶ = 140037121657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140104230571) 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, 116947841 + ... + 116949038.

It is an arithmetic number, because the mean of its divisors is an integer number (35084532000).

Almost surely, 2^140104230521 is an apocalyptic number.

It is an amenable number.

140104230521 is a deficient number, since it is larger than the sum of its proper divisors (233897479).

140104230521 is an equidigital number, since it uses as much as digits as its factorization.

140104230521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233897478.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 140104230521 its reverse (125032401041), we get a palindrome (265136631562).

The spelling of 140104230521 in words is "one hundred forty billion, one hundred four million, two hundred thirty thousand, five hundred twenty-one".