212389242 has 16 divisors (see below), whose sum is σ = 457453920. Its totient is φ = 65350512.

The previous prime is 212389241. The next prime is 212389259. The reversal of 212389242 is 242983212.

It is not an unprimeable number, because it can be changed into a prime (212389241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361392 + ... + 1361547.

It is an arithmetic number, because the mean of its divisors is an integer number (28590870).

Almost surely, 2^212389242 is an apocalyptic number.

212389242 is an abundant number, since it is smaller than the sum of its proper divisors (245064678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212389242 is a wasteful number, since it uses less digits than its factorization.

212389242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722957.

The product of its digits is 13824, while the sum is 33.

The square root of 212389242 is about 14573.5802739066. The cubic root of 212389242 is about 596.6379012311.

The spelling of 212389242 in words is "two hundred twelve million, three hundred eighty-nine thousand, two hundred forty-two".