210609842 has 8 divisors (see below), whose sum is σ = 316367532. Its totient is φ = 105154000.

The previous prime is 210609823. The next prime is 210609853. The reversal of 210609842 is 248906012.

210609842 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 161315401 + 49294441 = 12701^2 + 7021^2 .

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 = 210609799 and 210609808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73709 + ... + 76512.

Almost surely, 2^210609842 is an apocalyptic number.

210609842 is a deficient number, since it is larger than the sum of its proper divisors (105757690).

210609842 is a wasteful number, since it uses less digits than its factorization.

210609842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150924.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 210609842 is about 14512.4030401584. The cubic root of 210609842 is about 594.9670127417.

The spelling of 210609842 in words is "two hundred ten million, six hundred nine thousand, eight hundred forty-two".