7122130 has 16 divisors (see below), whose sum is σ = 13167000. Its totient is φ = 2771712.

The previous prime is 7122121. The next prime is 7122149. The reversal of 7122130 is 312217.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7080921 + 41209 = 2661^2 + 203^2 .

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, 9255 + ... + 9994.

Almost surely, 2^7122130 is an apocalyptic number.

7122130 is a deficient number, since it is larger than the sum of its proper divisors (6044870).

7122130 is a wasteful number, since it uses less digits than its factorization.

7122130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19293.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 7122130 is about 2668.7319086038. The cubic root of 7122130 is about 192.3992163729.

Adding to 7122130 its reverse (312217), we get a palindrome (7434347).

It can be divided in two parts, 71 and 22130, that added together give a square (22201 = 149²).

The spelling of 7122130 in words is "seven million, one hundred twenty-two thousand, one hundred thirty".