7122085 has 4 divisors (see below), whose sum is σ = 8546508. Its totient is φ = 5697664.

The previous prime is 7122079. The next prime is 7122091. The reversal of 7122085 is 5802217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5802217 = 1433 ⋅4049.

It is an interprime number because it is at equal distance from previous prime (7122079) and next prime (7122091).

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 3932289 = 1786^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 7122085 - 2⁵ = 7122053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712204 + ... + 712213.

It is an arithmetic number, because the mean of its divisors is an integer number (2136627).

Almost surely, 2^7122085 is an apocalyptic number.

It is an amenable number.

7122085 is a deficient number, since it is larger than the sum of its proper divisors (1424423).

7122085 is a wasteful number, since it uses less digits than its factorization.

7122085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424422.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 7122085 is about 2668.7234776200. The cubic root of 7122085 is about 192.3988111579.

The spelling of 7122085 in words is "seven million, one hundred twenty-two thousand, eighty-five".