212400430 has 32 divisors (see below), whose sum is σ = 439032960. Its totient is φ = 73170720.

The previous prime is 212400421. The next prime is 212400439. The reversal of 212400430 is 34004212.

It is an interprime number because it is at equal distance from previous prime (212400421) and next prime (212400439).

It is a super-2 number, since 2×212400430² = 90227885328369800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212400439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48724 + ... + 52903.

It is an arithmetic number, because the mean of its divisors is an integer number (13719780).

Almost surely, 2^212400430 is an apocalyptic number.

212400430 is an abundant number, since it is smaller than the sum of its proper divisors (226632530).

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

212400430 is a wasteful number, since it uses less digits than its factorization.

212400430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101664.

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

The square root of 212400430 is about 14573.9641141317. The cubic root of 212400430 is about 596.6483773857.

Adding to 212400430 its reverse (34004212), we get a palindrome (246404642).

The spelling of 212400430 in words is "two hundred twelve million, four hundred thousand, four hundred thirty".