212642454 has 16 divisors (see below), whose sum is σ = 439004160. Its totient is φ = 68594280.

The previous prime is 212642453. The next prime is 212642459. The reversal of 212642454 is 454246212.

212642454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212642453) 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, 571434 + ... + 571805.

It is an arithmetic number, because the mean of its divisors is an integer number (27437760).

Almost surely, 2^212642454 is an apocalyptic number.

212642454 is an abundant number, since it is smaller than the sum of its proper divisors (226361706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212642454 is a wasteful number, since it uses less digits than its factorization.

212642454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143275.

The product of its digits is 15360, while the sum is 30.

The square root of 212642454 is about 14582.2650503960. The cubic root of 212642454 is about 596.8749124165.

Adding to 212642454 its reverse (454246212), we get a palindrome (666888666).

The spelling of 212642454 in words is "two hundred twelve million, six hundred forty-two thousand, four hundred fifty-four".