7420385 has 16 divisors (see below), whose sum is σ = 10426752. Its totient is φ = 4963200.

The previous prime is 7420363. The next prime is 7420397. The reversal of 7420385 is 5830247.

It is a happy number.

It is not a de Polignac number, because 7420385 - 2²⁰ = 6371809 is a prime.

It is a super-2 number, since 2×7420385² = 110124227096450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151 + ... + 4020.

It is an arithmetic number, because the mean of its divisors is an integer number (651672).

Almost surely, 2^7420385 is an apocalyptic number.

It is an amenable number.

7420385 is a deficient number, since it is larger than the sum of its proper divisors (3006367).

7420385 is a wasteful number, since it uses less digits than its factorization.

7420385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5224.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 7420385 is about 2724.0383624318. The cubic root of 7420385 is about 195.0482895966.

The spelling of 7420385 in words is "seven million, four hundred twenty thousand, three hundred eighty-five".