208605142434 has 32 divisors (see below), whose sum is σ = 449414219520. Its totient is φ = 64170364032.

The previous prime is 208605142373. The next prime is 208605142453. The reversal of 208605142434 is 434241506802.

208605142434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×208605142434² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 208605142392 and 208605142401.

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 15 ways as a sum of consecutive naturals, for example, 9667 + ... + 645990.

It is an arithmetic number, because the mean of its divisors is an integer number (14044194360).

Almost surely, 2^208605142434 is an apocalyptic number.

208605142434 is an abundant number, since it is smaller than the sum of its proper divisors (240809077086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

208605142434 is a wasteful number, since it uses less digits than its factorization.

208605142434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659754.

The product of its (nonzero) digits is 184320, while the sum is 39.

The spelling of 208605142434 in words is "two hundred eight billion, six hundred five million, one hundred forty-two thousand, four hundred thirty-four".