210134705 has 16 divisors (see below), whose sum is σ = 291268224. Its totient is φ = 143834880.

The previous prime is 210134677. The next prime is 210134711. The reversal of 210134705 is 507431012.

It is not a de Polignac number, because 210134705 - 2¹⁶ = 210069169 is a prime.

It is a super-3 number, since 3×210134705³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111437 + ... + 113306.

It is an arithmetic number, because the mean of its divisors is an integer number (18204264).

Almost surely, 2^210134705 is an apocalyptic number.

It is an amenable number.

210134705 is a deficient number, since it is larger than the sum of its proper divisors (81133519).

210134705 is a wasteful number, since it uses less digits than its factorization.

210134705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224776.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 210134705 is about 14496.0237651571. The cubic root of 210134705 is about 594.5192595413.

Adding to 210134705 its reverse (507431012), we get a palindrome (717565717).

The spelling of 210134705 in words is "two hundred ten million, one hundred thirty-four thousand, seven hundred five".