212420453 has 8 divisors (see below), whose sum is σ = 242998272. Its totient is φ = 181900656.

The previous prime is 212420443. The next prime is 212420477. The reversal of 212420453 is 354024212.

It is a happy number.

212420453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212420453 - 2¹⁰ = 212419429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212420413) 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, 6350 + ... + 21567.

It is an arithmetic number, because the mean of its divisors is an integer number (30374784).

Almost surely, 2^212420453 is an apocalyptic number.

It is an amenable number.

212420453 is a deficient number, since it is larger than the sum of its proper divisors (30577819).

212420453 is a wasteful number, since it uses less digits than its factorization.

212420453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29011.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212420453 is about 14574.6510421348. The cubic root of 212420453 is about 596.6671254882.

Adding to 212420453 its reverse (354024212), we get a palindrome (566444665).

The spelling of 212420453 in words is "two hundred twelve million, four hundred twenty thousand, four hundred fifty-three".