212464145 has 8 divisors (see below), whose sum is σ = 255035304. Its totient is φ = 169919104.

The previous prime is 212464123. The next prime is 212464183. The reversal of 212464145 is 541464212.

It can be written as a sum of positive squares in 4 ways, for example, as 1430416 + 211033729 = 1196^2 + 14527^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212464145 - 2¹² = 212460049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 27557 + ... + 34413.

It is an arithmetic number, because the mean of its divisors is an integer number (31879413).

Almost surely, 2^212464145 is an apocalyptic number.

It is an amenable number.

212464145 is a deficient number, since it is larger than the sum of its proper divisors (42571159).

212464145 is an equidigital number, since it uses as much as digits as its factorization.

212464145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13059.

The product of its digits is 7680, while the sum is 29.

The square root of 212464145 is about 14576.1498688783. The cubic root of 212464145 is about 596.7080314563.

The spelling of 212464145 in words is "two hundred twelve million, four hundred sixty-four thousand, one hundred forty-five".