209073357042 has 32 divisors (see below), whose sum is σ = 466768431360. Its totient is φ = 61882176720.

The previous prime is 209073357029. The next prime is 209073357083. The reversal of 209073357042 is 240753370902.

209073357042 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 2×209073357042² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 209073356985 and 209073357003.

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, 36831792 + ... + 36837467.

It is an arithmetic number, because the mean of its divisors is an integer number (14586513480).

Almost surely, 2^209073357042 is an apocalyptic number.

209073357042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

209073357042 is an abundant number, since it is smaller than the sum of its proper divisors (257695074318).

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

209073357042 is a wasteful number, since it uses less digits than its factorization.

209073357042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73669318.

The product of its (nonzero) digits is 317520, while the sum is 42.

The spelling of 209073357042 in words is "two hundred nine billion, seventy-three million, three hundred fifty-seven thousand, forty-two".