212490424 has 24 divisors (see below), whose sum is σ = 412644960. Its totient is φ = 102578336.

The previous prime is 212490407. The next prime is 212490451. The reversal of 212490424 is 424094212.

It is a junction number, because it is equal to n+sod(n) for n = 212490392 and 212490401.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 9064 + ... + 22519.

It is an arithmetic number, because the mean of its divisors is an integer number (17193540).

Almost surely, 2^212490424 is an apocalyptic number.

It is an amenable number.

212490424 is a deficient number, since it is larger than the sum of its proper divisors (200154536).

212490424 is a wasteful number, since it uses less digits than its factorization.

212490424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31647 (or 31614 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 212490424 is about 14577.0512793226. The cubic root of 212490424 is about 596.7326320682.

The spelling of 212490424 in words is "two hundred twelve million, four hundred ninety thousand, four hundred twenty-four".