212442043 has 8 divisors (see below), whose sum is σ = 231908976. Its totient is φ = 193000800.

The previous prime is 212442037. The next prime is 212442071. The reversal of 212442043 is 340244212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212442043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212442343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13605 + ... + 24697.

It is an arithmetic number, because the mean of its divisors is an integer number (28988622).

Almost surely, 2^212442043 is an apocalyptic number.

212442043 is a deficient number, since it is larger than the sum of its proper divisors (19466933).

212442043 is a wasteful number, since it uses less digits than its factorization.

212442043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 212442043 is about 14575.3916928500. The cubic root of 212442043 is about 596.6873394971.

Adding to 212442043 its reverse (340244212), we get a palindrome (552686255).

The spelling of 212442043 in words is "two hundred twelve million, four hundred forty-two thousand, forty-three".