212300040 has 32 divisors (see below), whose sum is σ = 636900480. Its totient is φ = 56613312.

The previous prime is 212300021. The next prime is 212300057. The reversal of 212300040 is 40003212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 212299989 and 212300025.

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, 884464 + ... + 884703.

It is an arithmetic number, because the mean of its divisors is an integer number (19903140).

Almost surely, 2^212300040 is an apocalyptic number.

212300040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212300040 is an abundant number, since it is smaller than the sum of its proper divisors (424600440).

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

212300040 is a wasteful number, since it uses less digits than its factorization.

212300040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769181 (or 1769177 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 212300040 is about 14570.5195514779. The cubic root of 212300040 is about 596.5543616158.

Adding to 212300040 its reverse (40003212), we get a palindrome (252303252).

The spelling of 212300040 in words is "two hundred twelve million, three hundred thousand, forty".