212141240 has 32 divisors (see below), whose sum is σ = 480260880. Its totient is φ = 84333312.

The previous prime is 212141227. The next prime is 212141243. The reversal of 212141240 is 42141212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212141243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9749 + ... + 22788.

Almost surely, 2^212141240 is an apocalyptic number.

212141240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212141240 is an abundant number, since it is smaller than the sum of its proper divisors (268119640).

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

212141240 is a wasteful number, since it uses less digits than its factorization.

212141240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32711 (or 32707 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 212141240 is about 14565.0691725100. The cubic root of 212141240 is about 596.4055840297.

Adding to 212141240 its reverse (42141212), we get a palindrome (254282452).

The spelling of 212141240 in words is "two hundred twelve million, one hundred forty-one thousand, two hundred forty".