213421041 has 8 divisors (see below), whose sum is σ = 316179360. Its totient is φ = 142280676.

The previous prime is 213421037. The next prime is 213421067. The reversal of 213421041 is 140124312.

It is not a de Polignac number, because 213421041 - 2² = 213421037 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213421001) 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, 3952215 + ... + 3952268.

It is an arithmetic number, because the mean of its divisors is an integer number (39522420).

Almost surely, 2^213421041 is an apocalyptic number.

It is an amenable number.

213421041 is a deficient number, since it is larger than the sum of its proper divisors (102758319).

213421041 is an equidigital number, since it uses as much as digits as its factorization.

213421041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7904492 (or 7904486 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 213421041 is about 14608.9370249858. The cubic root of 213421041 is about 597.6025078119.

Adding to 213421041 its reverse (140124312), we get a palindrome (353545353).

The spelling of 213421041 in words is "two hundred thirteen million, four hundred twenty-one thousand, forty-one".