7420471 has 4 divisors (see below), whose sum is σ = 7427032. Its totient is φ = 7413912.

The previous prime is 7420463. The next prime is 7420481. The reversal of 7420471 is 1740247.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7420471 - 2³ = 7420463 is a prime.

It is a super-3 number, since 3×7420471³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

7420471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7420411) 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, 1101 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (1856758).

Almost surely, 2^7420471 is an apocalyptic number.

7420471 is a deficient number, since it is larger than the sum of its proper divisors (6561).

7420471 is a wasteful number, since it uses less digits than its factorization.

7420471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 7420471 is about 2724.0541477731. The cubic root of 7420471 is about 195.0490431104.

The spelling of 7420471 in words is "seven million, four hundred twenty thousand, four hundred seventy-one".