210242145 has 32 divisors (see below), whose sum is σ = 358380288. Its totient is φ = 104880128.

The previous prime is 210242089. The next prime is 210242159. The reversal of 210242145 is 541242012.

It is a cyclic number.

It is not a de Polignac number, because 210242145 - 2⁷ = 210242017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40117 + ... + 45053.

It is an arithmetic number, because the mean of its divisors is an integer number (11199384).

Almost surely, 2^210242145 is an apocalyptic number.

It is an amenable number.

210242145 is a deficient number, since it is larger than the sum of its proper divisors (148138143).

210242145 is a wasteful number, since it uses less digits than its factorization.

210242145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 210242145 is about 14499.7291354011. The cubic root of 210242145 is about 594.6205664086.

Adding to 210242145 its reverse (541242012), we get a palindrome (751484157).

The spelling of 210242145 in words is "two hundred ten million, two hundred forty-two thousand, one hundred forty-five".