212003140 has 24 divisors (see below), whose sum is σ = 468639360. Its totient is φ = 80337888.

The previous prime is 212003131. The next prime is 212003153. The reversal of 212003140 is 41300212.

It is a self number, because there is not a number n which added to its sum of digits gives 212003140.

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, 278572 + ... + 279331.

It is an arithmetic number, because the mean of its divisors is an integer number (19526640).

Almost surely, 2^212003140 is an apocalyptic number.

212003140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212003140 is an abundant number, since it is smaller than the sum of its proper divisors (256636220).

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

212003140 is a wasteful number, since it uses less digits than its factorization.

212003140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557931 (or 557929 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 212003140 is about 14560.3276062045. The cubic root of 212003140 is about 596.2761396244.

Adding to 212003140 its reverse (41300212), we get a palindrome (253303352).

The spelling of 212003140 in words is "two hundred twelve million, three thousand, one hundred forty".