7999242 has 16 divisors (see below), whose sum is σ = 16040640. Its totient is φ = 2659392.

The previous prime is 7999241. The next prime is 7999249. The reversal of 7999242 is 2429997.

It is a super-3 number, since 3×7999242³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7999194 and 7999203.

It is not an unprimeable number, because it can be changed into a prime (7999241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (1002540).

Almost surely, 2^7999242 is an apocalyptic number.

7999242 is an abundant number, since it is smaller than the sum of its proper divisors (8041398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7999242 is a wasteful number, since it uses less digits than its factorization.

7999242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517.

The product of its digits is 81648, while the sum is 42.

The square root of 7999242 is about 2828.2931248370. The cubic root of 7999242 is about 199.9936831338.

The spelling of 7999242 in words is "seven million, nine hundred ninety-nine thousand, two hundred forty-two".