142204405646 has 8 divisors (see below), whose sum is σ = 225854056080. Its totient is φ = 66919720288.

The previous prime is 142204405633. The next prime is 142204405649. The reversal of 142204405646 is 646504402241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142204405649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2091241226 + ... + 2091241293.

It is an arithmetic number, because the mean of its divisors is an integer number (28231757010).

Almost surely, 2^142204405646 is an apocalyptic number.

142204405646 is a deficient number, since it is larger than the sum of its proper divisors (83649650434).

142204405646 is a wasteful number, since it uses less digits than its factorization.

142204405646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4182482538.

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 142204405646 its reverse (646504402241), we get a palindrome (788708807887).

The spelling of 142204405646 in words is "one hundred forty-two billion, two hundred four million, four hundred five thousand, six hundred forty-six".