212042454 has 16 divisors (see below), whose sum is σ = 456706992. Its totient is φ = 65243808.

The previous prime is 212042437. The next prime is 212042459. The reversal of 212042454 is 454240212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212042459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359169 + ... + 1359324.

It is an arithmetic number, because the mean of its divisors is an integer number (28544187).

Almost surely, 2^212042454 is an apocalyptic number.

212042454 is an abundant number, since it is smaller than the sum of its proper divisors (244664538).

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

212042454 is a wasteful number, since it uses less digits than its factorization.

212042454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718511.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 212042454 is about 14561.6775819272. The cubic root of 212042454 is about 596.3129952912.

Adding to 212042454 its reverse (454240212), we get a palindrome (666282666).

The spelling of 212042454 in words is "two hundred twelve million, forty-two thousand, four hundred fifty-four".