212125240 has 16 divisors (see below), whose sum is σ = 477281880. Its totient is φ = 84850080.

The previous prime is 212125229. The next prime is 212125273. The reversal of 212125240 is 42521212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2651526 + ... + 2651605.

Almost surely, 2^212125240 is an apocalyptic number.

212125240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212125240 is an abundant number, since it is smaller than the sum of its proper divisors (265156640).

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

212125240 is a wasteful number, since it uses less digits than its factorization.

212125240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5303142 (or 5303138 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 212125240 is about 14564.5199028324. The cubic root of 212125240 is about 596.3905897281.

Adding to 212125240 its reverse (42521212), we get a palindrome (254646452).

The spelling of 212125240 in words is "two hundred twelve million, one hundred twenty-five thousand, two hundred forty".