212405041 has 4 divisors (see below), whose sum is σ = 212445184. Its totient is φ = 212364900.

The previous prime is 212405033. The next prime is 212405093. The reversal of 212405041 is 140504212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212405041 - 2³ = 212405033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215405041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10665 + ... + 23206.

It is an arithmetic number, because the mean of its divisors is an integer number (53111296).

Almost surely, 2^212405041 is an apocalyptic number.

It is an amenable number.

212405041 is a deficient number, since it is larger than the sum of its proper divisors (40143).

212405041 is an equidigital number, since it uses as much as digits as its factorization.

212405041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40142.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 212405041 is about 14574.1223063346. The cubic root of 212405041 is about 596.6526949001.

Adding to 212405041 its reverse (140504212), we get a palindrome (352909253).

The spelling of 212405041 in words is "two hundred twelve million, four hundred five thousand, forty-one".