7428571 has 2 divisors, whose sum is σ = 7428572. Its totient is φ = 7428570.

The previous prime is 7428539. The next prime is 7428581. The reversal of 7428571 is 1758247.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1758247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7428571 - 2⁵ = 7428539 is a prime.

It is not a weakly prime, because it can be changed into another prime (7428521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3714285 + 3714286.

It is an arithmetic number, because the mean of its divisors is an integer number (3714286).

Almost surely, 2^7428571 is an apocalyptic number.

7428571 is a deficient number, since it is larger than the sum of its proper divisors (1).

7428571 is an equidigital number, since it uses as much as digits as its factorization.

7428571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 34.

The square root of 7428571 is about 2725.5404968556. The cubic root of 7428571 is about 195.1199875172.

The spelling of 7428571 in words is "seven million, four hundred twenty-eight thousand, five hundred seventy-one".