7842124 has 6 divisors (see below), whose sum is σ = 13723724. Its totient is φ = 3921060.

The previous prime is 7842119. The next prime is 7842127. The reversal of 7842124 is 4212487.

7842124 = T₂₂₈₅ + T₂₂₈₆ + T₂₂₈₇.

7842124 is nontrivially palindromic in base 6.

It is a super-2 number, since 2×7842124² = 122997817662752, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7842092 and 7842101.

It is not an unprimeable number, because it can be changed into a prime (7842127) 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 as a sum of consecutive naturals, namely, 980262 + ... + 980269.

Almost surely, 2^7842124 is an apocalyptic number.

7842124 is the 2287-th centered triangular number.

It is an amenable number.

7842124 is a deficient number, since it is larger than the sum of its proper divisors (5881600).

7842124 is a wasteful number, since it uses less digits than its factorization.

7842124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960535 (or 1960533 counting only the distinct ones).

The product of its digits is 3584, while the sum is 28.

The square root of 7842124 is about 2800.3792600289. The cubic root of 7842124 is about 198.6756160606.

The spelling of 7842124 in words is "seven million, eight hundred forty-two thousand, one hundred twenty-four".