142003921689 has 16 divisors (see below), whose sum is σ = 240429920640. Its totient is φ = 81145098000.

The previous prime is 142003921663. The next prime is 142003921751. The reversal of 142003921689 is 986129300241.

142003921689 is a `hidden beast` number, since 1 + 420 + 0 + 3 + 9 + 216 + 8 + 9 = 666.

It is not a de Polignac number, because 142003921689 - 2⁹ = 142003921177 is a prime.

It is a super-2 number, since 2×142003921689² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142003921889) 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, 375671562 + ... + 375671939.

It is an arithmetic number, because the mean of its divisors is an integer number (15026870040).

Almost surely, 2^142003921689 is an apocalyptic number.

It is an amenable number.

142003921689 is a deficient number, since it is larger than the sum of its proper divisors (98425998951).

142003921689 is an equidigital number, since it uses as much as digits as its factorization.

142003921689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751343517 (or 751343511 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 142003921689 in words is "one hundred forty-two billion, three million, nine hundred twenty-one thousand, six hundred eighty-nine".