210542145 has 16 divisors (see below), whose sum is σ = 367492032. Its totient is φ = 102080960.

The previous prime is 210542141. The next prime is 210542153. The reversal of 210542145 is 541245012.

It is not a de Polignac number, because 210542145 - 2² = 210542141 is a prime.

It is a super-3 number, since 3×210542145³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (210542141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637842 + ... + 638171.

It is an arithmetic number, because the mean of its divisors is an integer number (22968252).

Almost surely, 2^210542145 is an apocalyptic number.

It is an amenable number.

210542145 is a deficient number, since it is larger than the sum of its proper divisors (156949887).

210542145 is a wasteful number, since it uses less digits than its factorization.

210542145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276032.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 210542145 is about 14510.0704684712. The cubic root of 210542145 is about 594.9032585225.

Adding to 210542145 its reverse (541245012), we get a palindrome (751787157).

The spelling of 210542145 in words is "two hundred ten million, five hundred forty-two thousand, one hundred forty-five".