212487 has 16 divisors (see below), whose sum is σ = 317952. Its totient is φ = 125120.

The previous prime is 212479. The next prime is 212501. The reversal of 212487 is 784212.

It is a cyclic number.

It is not a de Polignac number, because 212487 - 2³ = 212479 is a prime.

212487 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212437) 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, 1483 + ... + 1619.

It is an arithmetic number, because the mean of its divisors is an integer number (19872).

2²¹²⁴⁸⁷ is an apocalyptic number.

212487 is a deficient number, since it is larger than the sum of its proper divisors (105465).

212487 is a wasteful number, since it uses less digits than its factorization.

212487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198.

The product of its digits is 896, while the sum is 24.

The square root of 212487 is about 460.9631221692. The cubic root of 212487 is about 59.6729426867.

Adding to 212487 its reverse (784212), we get a palindrome (996699).

It can be divided in two parts, 2124 and 87, that added together give a triangular number (2211 = T₆₆).

The spelling of 212487 in words is "two hundred twelve thousand, four hundred eighty-seven".