7121600 has 42 divisors (see below), whose sum is σ = 17527524. Its totient is φ = 2848000.

The previous prime is 7121593. The next prime is 7121603. The reversal of 7121600 is 61217.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7121603) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 626 + ... + 3825.

It is an arithmetic number, because the mean of its divisors is an integer number (417322).

Almost surely, 2^7121600 is an apocalyptic number.

It is an amenable number.

7121600 is an abundant number, since it is smaller than the sum of its proper divisors (10405924).

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

7121600 is a wasteful number, since it uses less digits than its factorization.

7121600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4473 (or 4458 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 7121600 is about 2668.6326086593. The cubic root of 7121600 is about 192.3944437317.

Adding to 7121600 its reverse (61217), we get a palindrome (7182817).

The spelling of 7121600 in words is "seven million, one hundred twenty-one thousand, six hundred".