210134039 has 4 divisors (see below), whose sum is σ = 214605024. Its totient is φ = 205663056.

The previous prime is 210134021. The next prime is 210134047. The reversal of 210134039 is 930431012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210134039 - 2¹² = 210129943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210134339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2235422 + ... + 2235515.

It is an arithmetic number, because the mean of its divisors is an integer number (53651256).

Almost surely, 2^210134039 is an apocalyptic number.

210134039 is a deficient number, since it is larger than the sum of its proper divisors (4470985).

210134039 is an equidigital number, since it uses as much as digits as its factorization.

210134039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4470984.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 210134039 is about 14496.0007933223. Note that the first 3 decimals coincide. The cubic root of 210134039 is about 594.5186314517.

Subtracting from 210134039 its sum of digits (23), we obtain a square (210134016 = 14496²).

It can be divided in two parts, 21013 and 4039, that added together give a palindrome (25052).

The spelling of 210134039 in words is "two hundred ten million, one hundred thirty-four thousand, thirty-nine".