7842424 has 16 divisors (see below), whose sum is σ = 14761800. Its totient is φ = 3905952.

The previous prime is 7842403. The next prime is 7842427. The reversal of 7842424 is 4242487.

It is a super-2 number, since 2×7842424² = 123007228391552, which contains 22 as substring.

7842424 is a modest number, since divided by 2424 gives 784 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7842427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447 + ... + 3985.

Almost surely, 2^7842424 is an apocalyptic number.

It is an amenable number.

7842424 is a deficient number, since it is larger than the sum of its proper divisors (6919376).

7842424 is a wasteful number, since it uses less digits than its factorization.

7842424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822 (or 3818 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 7842424 is about 2800.4328236899. The cubic root of 7842424 is about 198.6781494697.

The spelling of 7842424 in words is "seven million, eight hundred forty-two thousand, four hundred twenty-four".