7125919 has 4 divisors (see below), whose sum is σ = 7232344. Its totient is φ = 7019496.

The previous prime is 7125901. The next prime is 7125947. The reversal of 7125919 is 9195217.

7125919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7125919 - 2⁵ = 7125887 is a prime.

It is a super-2 number, since 2×7125919² = 101557443189122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7125949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53112 + ... + 53245.

It is an arithmetic number, because the mean of its divisors is an integer number (1808086).

Almost surely, 2^7125919 is an apocalyptic number.

7125919 is a deficient number, since it is larger than the sum of its proper divisors (106425).

7125919 is a wasteful number, since it uses less digits than its factorization.

7125919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106424.

The product of its digits is 5670, while the sum is 34.

The square root of 7125919 is about 2669.4417019295. The cubic root of 7125919 is about 192.4333293603.

The spelling of 7125919 in words is "seven million, one hundred twenty-five thousand, nine hundred nineteen".