7842481 has 2 divisors, whose sum is σ = 7842482. Its totient is φ = 7842480.

The previous prime is 7842451. The next prime is 7842493. The reversal of 7842481 is 1842487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7612081 + 230400 = 2759^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 7842481 - 2⁹ = 7841969 is a prime.

It is a super-2 number, since 2×7842481² = 123009016470722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7842431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3921240 + 3921241.

It is an arithmetic number, because the mean of its divisors is an integer number (3921241).

Almost surely, 2^7842481 is an apocalyptic number.

It is an amenable number.

7842481 is a deficient number, since it is larger than the sum of its proper divisors (1).

7842481 is an equidigital number, since it uses as much as digits as its factorization.

7842481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14336, while the sum is 34.

The square root of 7842481 is about 2800.4430006697. The cubic root of 7842481 is about 198.6786308101.

The spelling of 7842481 in words is "seven million, eight hundred forty-two thousand, four hundred eighty-one".