7420845 has 8 divisors (see below), whose sum is σ = 11873376. Its totient is φ = 3957776.

The previous prime is 7420837. The next prime is 7420883. The reversal of 7420845 is 5480247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7420845 - 2³ = 7420837 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247347 + ... + 247376.

It is an arithmetic number, because the mean of its divisors is an integer number (1484172).

Almost surely, 2^7420845 is an apocalyptic number.

It is an amenable number.

7420845 is a deficient number, since it is larger than the sum of its proper divisors (4452531).

7420845 is a wasteful number, since it uses less digits than its factorization.

7420845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494731.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 7420845 is about 2724.1227945891. The cubic root of 7420845 is about 195.0523199517.

The spelling of 7420845 in words is "seven million, four hundred twenty thousand, eight hundred forty-five".