212404454 has 4 divisors (see below), whose sum is σ = 318606684. Its totient is φ = 106202226.

The previous prime is 212404453. The next prime is 212404459. The reversal of 212404454 is 454404212.

212404454 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212404453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53101112 + ... + 53101115.

It is an arithmetic number, because the mean of its divisors is an integer number (79651671).

Almost surely, 2^212404454 is an apocalyptic number.

212404454 is a deficient number, since it is larger than the sum of its proper divisors (106202230).

212404454 is a wasteful number, since it uses less digits than its factorization.

212404454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106202229.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 212404454 is about 14574.1021678867. The cubic root of 212404454 is about 596.6521452656.

Adding to 212404454 its reverse (454404212), we get a palindrome (666808666).

The spelling of 212404454 in words is "two hundred twelve million, four hundred four thousand, four hundred fifty-four".