212534145 has 32 divisors (see below), whose sum is σ = 394272000. Its totient is φ = 108421632.

The previous prime is 212534137. The next prime is 212534159. The reversal of 212534145 is 541435212.

It is not a de Polignac number, because 212534145 - 2³ = 212534137 is a prime.

It is a super-4 number, since 4×212534145⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31120 + ... + 37329.

It is an arithmetic number, because the mean of its divisors is an integer number (12321000).

Almost surely, 2^212534145 is an apocalyptic number.

It is an amenable number.

212534145 is a deficient number, since it is larger than the sum of its proper divisors (181737855).

212534145 is a wasteful number, since it uses less digits than its factorization.

212534145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68486 (or 68480 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 212534145 is about 14578.5508539086. The cubic root of 212534145 is about 596.7735561998.

Adding to 212534145 its reverse (541435212), we get a palindrome (753969357).

The spelling of 212534145 in words is "two hundred twelve million, five hundred thirty-four thousand, one hundred forty-five".