7212140 has 24 divisors (see below), whose sum is σ = 16311120. Its totient is φ = 2662848.

The previous prime is 7212083. The next prime is 7212157. The reversal of 7212140 is 412127.

It is an unprimeable number.

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, 13610 + ... + 14129.

It is an arithmetic number, because the mean of its divisors is an integer number (679630).

Almost surely, 2^7212140 is an apocalyptic number.

It is an amenable number.

7212140 is an abundant number, since it is smaller than the sum of its proper divisors (9098980).

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

7212140 is a wasteful number, since it uses less digits than its factorization.

7212140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27761 (or 27759 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 7212140 is about 2685.5427756787. The cubic root of 7212140 is about 193.2063441400.

Adding to 7212140 its reverse (412127), we get a palindrome (7624267).

The spelling of 7212140 in words is "seven million, two hundred twelve thousand, one hundred forty".