142627830921 has 9 divisors (see below), whose sum is σ = 206019614541. Its totient is φ = 95084465292.

The previous prime is 142627830893. The next prime is 142627830929. The reversal of 142627830921 is 129038726241.

The square root of 142627830921 is 377661.

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

142627830921 is a `hidden beast` number, since 14 + 2 + 627 + 8 + 3 + 0 + 9 + 2 + 1 = 666.

142627830921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 142627830921 - 2²¹ = 142625733769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142627830929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1070040 + ... + 1195926.

Almost surely, 2^142627830921 is an apocalyptic number.

142627830921 is the 377661-st square number.

142627830921 is the 188831-st centered octagonal number.

It is an amenable number.

142627830921 is a deficient number, since it is larger than the sum of its proper divisors (63391783620).

142627830921 is an frugal number, since it uses more digits than its factorization.

142627830921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251780 (or 125890 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 142627830921 in words is "one hundred forty-two billion, six hundred twenty-seven million, eight hundred thirty thousand, nine hundred twenty-one".