212009254 has 4 divisors (see below), whose sum is σ = 318013884. Its totient is φ = 106004626.

The previous prime is 212009249. The next prime is 212009257. The reversal of 212009254 is 452900212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212009257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53002312 + ... + 53002315.

It is an arithmetic number, because the mean of its divisors is an integer number (79503471).

Almost surely, 2^212009254 is an apocalyptic number.

212009254 is a deficient number, since it is larger than the sum of its proper divisors (106004630).

212009254 is a wasteful number, since it uses less digits than its factorization.

212009254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106004629.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 212009254 is about 14560.5375587579. The cubic root of 212009254 is about 596.2818716106.

Adding to 212009254 its reverse (452900212), we get a palindrome (664909466).

The spelling of 212009254 in words is "two hundred twelve million, nine thousand, two hundred fifty-four".