206456121142 has 8 divisors (see below), whose sum is σ = 318054024576. Its totient is φ = 100438112952.

The previous prime is 206456121101. The next prime is 206456121161. The reversal of 206456121142 is 241121654602.

206456121142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 206456121098 and 206456121107.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1394973718 + ... + 1394973865.

It is an arithmetic number, because the mean of its divisors is an integer number (39756753072).

Almost surely, 2^206456121142 is an apocalyptic number.

206456121142 is a deficient number, since it is larger than the sum of its proper divisors (111597903434).

206456121142 is a wasteful number, since it uses less digits than its factorization.

206456121142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789947622.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 206456121142 its reverse (241121654602), we get a palindrome (447577775744).

The spelling of 206456121142 in words is "two hundred six billion, four hundred fifty-six million, one hundred twenty-one thousand, one hundred forty-two".