212143004 has 24 divisors (see below), whose sum is σ = 385160160. Its totient is φ = 102118464.

The previous prime is 212143003. The next prime is 212143021. The reversal of 212143004 is 400341212.

It is a super-2 number, since 2×212143004² = 90009308292288032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212143003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40817 + ... + 45719.

It is an arithmetic number, because the mean of its divisors is an integer number (16048340).

Almost surely, 2^212143004 is an apocalyptic number.

It is an amenable number.

212143004 is a deficient number, since it is larger than the sum of its proper divisors (173017156).

212143004 is a wasteful number, since it uses less digits than its factorization.

212143004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5309 (or 5307 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212143004 is about 14565.1297282242. The cubic root of 212143004 is about 596.4072371054.

Adding to 212143004 its reverse (400341212), we get a palindrome (612484216).

The spelling of 212143004 in words is "two hundred twelve million, one hundred forty-three thousand, four".