212401424 has 20 divisors (see below), whose sum is σ = 421099536. Its totient is φ = 103730592.

The previous prime is 212401411. The next prime is 212401439. The reversal of 212401424 is 424104212.

It is a super-2 number, since 2×212401424² = 90228729834455552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212401396 and 212401405.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 153674 + ... + 155049.

Almost surely, 2^212401424 is an apocalyptic number.

It is an amenable number.

212401424 is a deficient number, since it is larger than the sum of its proper divisors (208698112).

212401424 is a wasteful number, since it uses less digits than its factorization.

212401424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308774 (or 308768 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 212401424 is about 14573.9982160010. The cubic root of 212401424 is about 596.6493081239.

Adding to 212401424 its reverse (424104212), we get a palindrome (636505636).

The spelling of 212401424 in words is "two hundred twelve million, four hundred one thousand, four hundred twenty-four".