208672212242 has 18 divisors (see below), whose sum is σ = 338951643093. Its totient is φ = 96306375672.

The previous prime is 208672212197. The next prime is 208672212257. The reversal of 208672212242 is 242212276802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178420915201 + 30251297041 = 422399^2 + 173929^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=323011.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208672212196 and 208672212205.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8385863 + ... + 8410709.

Almost surely, 2^208672212242 is an apocalyptic number.

208672212242 is a deficient number, since it is larger than the sum of its proper divisors (130279430851).

208672212242 is an frugal number, since it uses more digits than its factorization.

208672212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49722 (or 24862 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 208672212242 in words is "two hundred eight billion, six hundred seventy-two million, two hundred twelve thousand, two hundred forty-two".