7125140 has 48 divisors (see below), whose sum is σ = 16511040. Its totient is φ = 2561280.

The previous prime is 7125121. The next prime is 7125169. The reversal of 7125140 is 415217.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 30464 + ... + 30696.

It is an arithmetic number, because the mean of its divisors is an integer number (343980).

Almost surely, 2^7125140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7125140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8255520).

7125140 is an abundant number, since it is smaller than the sum of its proper divisors (9385900).

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

7125140 is a wasteful number, since it uses less digits than its factorization.

7125140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7125140 is about 2669.2957872817. The cubic root of 7125140 is about 192.4263168834.

The spelling of 7125140 in words is "seven million, one hundred twenty-five thousand, one hundred forty".