210243134 has 4 divisors (see below), whose sum is σ = 315364704. Its totient is φ = 105121566.

The previous prime is 210243133. The next prime is 210243157. The reversal of 210243134 is 431342012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210243133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52560782 + ... + 52560785.

It is an arithmetic number, because the mean of its divisors is an integer number (78841176).

Almost surely, 2^210243134 is an apocalyptic number.

210243134 is a deficient number, since it is larger than the sum of its proper divisors (105121570).

210243134 is a wasteful number, since it uses less digits than its factorization.

210243134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105121569.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 210243134 is about 14499.7632394464. The cubic root of 210243134 is about 594.6214987920.

Adding to 210243134 its reverse (431342012), we get a palindrome (641585146).

The spelling of 210243134 in words is "two hundred ten million, two hundred forty-three thousand, one hundred thirty-four".