142908949089 has 9 divisors (see below), whose sum is σ = 206425675729. Its totient is φ = 95271876660.

The previous prime is 142908949067. The next prime is 142908949091. The reversal of 142908949089 is 980949809241.

The square root of 142908949089 is 378033.

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

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

It is not a de Polignac number, because 142908949089 - 2⁹ = 142908948577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142908949789) 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, 1071094 + ... + 1197104.

Almost surely, 2^142908949089 is an apocalyptic number.

142908949089 is the 378033-rd square number.

142908949089 is the 189017-th centered octagonal number.

It is an amenable number.

142908949089 is a deficient number, since it is larger than the sum of its proper divisors (63516726640).

142908949089 is an frugal number, since it uses more digits than its factorization.

142908949089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252028 (or 126014 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 142908949089 in words is "one hundred forty-two billion, nine hundred eight million, nine hundred forty-nine thousand, eighty-nine".