7720242 has 8 divisors (see below), whose sum is σ = 15440496. Its totient is φ = 2573412.

The previous prime is 7720241. The next prime is 7720247. The reversal of 7720242 is 2420277.

It is a sphenic number, since it is the product of 3 distinct primes.

7720242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (7720241) 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 in 3 ways as a sum of consecutive naturals, for example, 643348 + ... + 643359.

It is an arithmetic number, because the mean of its divisors is an integer number (1930062).

Almost surely, 2^7720242 is an apocalyptic number.

7720242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7720242 is a wasteful number, since it uses less digits than its factorization.

7720242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286712.

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7720242 is about 2778.5323464016. The cubic root of 7720242 is about 197.6409675640.

The spelling of 7720242 in words is "seven million, seven hundred twenty thousand, two hundred forty-two".