7120385 has 4 divisors (see below), whose sum is σ = 8544468. Its totient is φ = 5696304.

The previous prime is 7120381. The next prime is 7120387. The reversal of 7120385 is 5830217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5830217 = 701 ⋅8317.

It can be written as a sum of positive squares in 2 ways, for example, as 1926544 + 5193841 = 1388^2 + 2279^2 .

It is a cyclic number.

It is not a de Polignac number, because 7120385 - 2² = 7120381 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7120381) 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, 712034 + ... + 712043.

It is an arithmetic number, because the mean of its divisors is an integer number (2136117).

Almost surely, 2^7120385 is an apocalyptic number.

It is an amenable number.

7120385 is a deficient number, since it is larger than the sum of its proper divisors (1424083).

7120385 is a wasteful number, since it uses less digits than its factorization.

7120385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424082.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 7120385 is about 2668.4049542751. The cubic root of 7120385 is about 192.3835017831.

The spelling of 7120385 in words is "seven million, one hundred twenty thousand, three hundred eighty-five".