7871212 has 6 divisors (see below), whose sum is σ = 13774628. Its totient is φ = 3935604.

The previous prime is 7871207. The next prime is 7871219. The reversal of 7871212 is 2121787.

It is not an unprimeable number, because it can be changed into a prime (7871219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983898 + ... + 983905.

Almost surely, 2^7871212 is an apocalyptic number.

It is an amenable number.

7871212 is a deficient number, since it is larger than the sum of its proper divisors (5903416).

7871212 is a wasteful number, since it uses less digits than its factorization.

7871212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967807 (or 1967805 counting only the distinct ones).

The product of its digits is 1568, while the sum is 28.

The square root of 7871212 is about 2805.5680351758. The cubic root of 7871212 is about 198.9209554507.

Adding to 7871212 its reverse (2121787), we get a palindrome (9992999).

The spelling of 7871212 in words is "seven million, eight hundred seventy-one thousand, two hundred twelve".