212427 has 6 divisors (see below), whose sum is σ = 306852. Its totient is φ = 141612.

The previous prime is 212423. The next prime is 212437. The reversal of 212427 is 724212.

It is not a de Polignac number, because 212427 - 2² = 212423 is a prime.

It is an Ulam number.

212427 is a lucky number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (212423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11793 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (51142).

2²¹²⁴²⁷ is an apocalyptic number.

212427 is a deficient number, since it is larger than the sum of its proper divisors (94425).

212427 is a wasteful number, since it uses less digits than its factorization.

212427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23609 (or 23606 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 212427 is about 460.8980364462. The cubic root of 212427 is about 59.6673255374.

Adding to 212427 its reverse (724212), we get a palindrome (936639).

The spelling of 212427 in words is "two hundred twelve thousand, four hundred twenty-seven", and thus it is an iban number.