212719145 has 4 divisors (see below), whose sum is σ = 255262980. Its totient is φ = 170175312.

The previous prime is 212719121. The next prime is 212719159. The reversal of 212719145 is 541917212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63170704 + 149548441 = 7948^2 + 12229^2 .

It is a cyclic number.

It is not a de Polignac number, because 212719145 - 2²⁴ = 195941929 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21271910 + ... + 21271919.

It is an arithmetic number, because the mean of its divisors is an integer number (63815745).

Almost surely, 2^212719145 is an apocalyptic number.

It is an amenable number.

212719145 is a deficient number, since it is larger than the sum of its proper divisors (42543835).

212719145 is an equidigital number, since it uses as much as digits as its factorization.

212719145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42543834.

The product of its digits is 5040, while the sum is 32.

The square root of 212719145 is about 14584.8944116850. The cubic root of 212719145 is about 596.9466595067.

The spelling of 212719145 in words is "two hundred twelve million, seven hundred nineteen thousand, one hundred forty-five".