212045403 has 8 divisors (see below), whose sum is σ = 299358288. Its totient is φ = 133048064.

The previous prime is 212045387. The next prime is 212045429. The reversal of 212045403 is 304540212.

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

It is a cyclic number.

It is not a de Polignac number, because 212045403 - 2⁴ = 212045387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212045403.

It is not an unprimeable number, because it can be changed into a prime (212045443) 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, 2078826 + ... + 2078927.

It is an arithmetic number, because the mean of its divisors is an integer number (37419786).

Almost surely, 2^212045403 is an apocalyptic number.

212045403 is a deficient number, since it is larger than the sum of its proper divisors (87312885).

212045403 is a wasteful number, since it uses less digits than its factorization.

212045403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157773.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 212045403 is about 14561.7788405126. The cubic root of 212045403 is about 596.3157597044.

Adding to 212045403 its reverse (304540212), we get a palindrome (516585615).

The spelling of 212045403 in words is "two hundred twelve million, forty-five thousand, four hundred three".