140574481800921 has 45 divisors (see below), whose sum is σ = 244280008251279. Its totient is φ = 80327848484016.

The previous prime is 140574481800887. The next prime is 140574481801009. The reversal of 140574481800921 is 129008184475041.

It is a happy number.

The square root of 140574481800921 is 11856411.

It is a perfect power (a square), and thus also a powerful number.

140574481800921 is a `hidden beast` number, since 1 + 4 + 0 + 5 + 74 + 481 + 8 + 0 + 0 + 92 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 932141975625 + 139642339825296 = 965475^2 + 11817036^2 .

It is not a de Polignac number, because 140574481800921 - 2¹³ = 140574481792729 is a prime.

It is a super-3 number, since 3×140574481800921³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140574481801921) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 746859795 + ... + 747047991.

Almost surely, 2^{140574481800921} is an apocalyptic number.

140574481800921 is the 11856411-st square number.

140574481800921 is the 5928206-th centered octagonal number.

It is an amenable number.

140574481800921 is a deficient number, since it is larger than the sum of its proper divisors (103705526450358).

140574481800921 is an frugal number, since it uses more digits than its factorization.

140574481800921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376420 (or 188207 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 54.

The spelling of 140574481800921 in words is "one hundred forty trillion, five hundred seventy-four billion, four hundred eighty-one million, eight hundred thousand, nine hundred twenty-one".