7408421771 has 2 divisors, whose sum is σ = 7408421772. Its totient is φ = 7408421770.

The previous prime is 7408421759. The next prime is 7408421777. The reversal of 7408421771 is 1771248047.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7408421771 - 2⁶ = 7408421707 is a prime.

It is not a weakly prime, because it can be changed into another prime (7408421777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3704210885 + 3704210886.

It is an arithmetic number, because the mean of its divisors is an integer number (3704210886).

Almost surely, 2^7408421771 is an apocalyptic number.

7408421771 is a deficient number, since it is larger than the sum of its proper divisors (1).

7408421771 is an equidigital number, since it uses as much as digits as its factorization.

7408421771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 7408421771 is about 86072.1893006098. The cubic root of 7408421771 is about 1949.4341352614.

The spelling of 7408421771 in words is "seven billion, four hundred eight million, four hundred twenty-one thousand, seven hundred seventy-one".