140354304521 has 16 divisors (see below), whose sum is σ = 149325187200. Its totient is φ = 131542921728.

The previous prime is 140354304451. The next prime is 140354304547. The reversal of 140354304521 is 125403453041.

It is a cyclic number.

It is not a de Polignac number, because 140354304521 - 2¹⁰ = 140354303497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140354304551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4949060 + ... + 4977338.

It is an arithmetic number, because the mean of its divisors is an integer number (9332824200).

Almost surely, 2^140354304521 is an apocalyptic number.

It is an amenable number.

140354304521 is a deficient number, since it is larger than the sum of its proper divisors (8970882679).

140354304521 is a wasteful number, since it uses less digits than its factorization.

140354304521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31088.

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

Adding to 140354304521 its reverse (125403453041), we get a palindrome (265757757562).

The spelling of 140354304521 in words is "one hundred forty billion, three hundred fifty-four million, three hundred four thousand, five hundred twenty-one".