212430040 has 32 divisors (see below), whose sum is σ = 480654000. Its totient is φ = 84494464.

The previous prime is 212430037. The next prime is 212430077. The reversal of 212430040 is 40034212.

212430040 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 212429996 and 212430023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7675 + ... + 21994.

Almost surely, 2^212430040 is an apocalyptic number.

212430040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212430040 is an abundant number, since it is smaller than the sum of its proper divisors (268223960).

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

212430040 is a wasteful number, since it uses less digits than its factorization.

212430040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29859 (or 29855 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212430040 is about 14574.9799313755. The cubic root of 212430040 is about 596.6761016509.

Adding to 212430040 its reverse (40034212), we get a palindrome (252464252).

The spelling of 212430040 in words is "two hundred twelve million, four hundred thirty thousand, forty".