141873508921 has 9 divisors (see below), whose sum is σ = 142730258349. Its totient is φ = 141021878400.

The previous prime is 141873508873. The next prime is 141873508939. The reversal of 141873508921 is 129805378141.

The square root of 141873508921 is 376661.

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

It can be written as a sum of positive squares in 4 ways, for example, as 73365681321 + 68507827600 = 270861^2 + 261740^2 .

It is not a de Polignac number, because 141873508921 - 2⁷ = 141873508793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141873508951) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 68174601 + ... + 68176681.

Almost surely, 2^141873508921 is an apocalyptic number.

141873508921 is the 376661-st square number.

141873508921 is the 188331-st centered octagonal number.

It is an amenable number.

141873508921 is a deficient number, since it is larger than the sum of its proper divisors (856749428).

141873508921 is an frugal number, since it uses more digits than its factorization.

141873508921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

Multiplying 141873508921 by its sum of digits (49), we get a square (6951801937129 = 2636627²).

The spelling of 141873508921 in words is "one hundred forty-one billion, eight hundred seventy-three million, five hundred eight thousand, nine hundred twenty-one".