7040045 has 4 divisors (see below), whose sum is σ = 8448060. Its totient is φ = 5632032.

The previous prime is 7040041. The next prime is 7040053. The reversal of 7040045 is 5400407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5400407 = 17 ⋅317671.

It can be written as a sum of positive squares in 2 ways, for example, as 4153444 + 2886601 = 2038^2 + 1699^2 .

It is a cyclic number.

It is not a de Polignac number, because 7040045 - 2² = 7040041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7039999 and 7040026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704000 + ... + 704009.

It is an arithmetic number, because the mean of its divisors is an integer number (2112015).

Almost surely, 2^7040045 is an apocalyptic number.

It is an amenable number.

7040045 is a deficient number, since it is larger than the sum of its proper divisors (1408015).

7040045 is a wasteful number, since it uses less digits than its factorization.

7040045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408014.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 7040045 is about 2653.3083122773. The cubic root of 7040045 is about 191.6572026413.

The spelling of 7040045 in words is "seven million, forty thousand, forty-five".