9920242 has 8 divisors (see below), whose sum is σ = 15663600. Its totient is φ = 4699044.

The previous prime is 9920219. The next prime is 9920249. The reversal of 9920242 is 2420299.

It is a happy number.

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

It is a super-2 number, since 2×9920242² = 196822402677128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9920242.

It is not an unprimeable number, because it can be changed into a prime (9920249) 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, 130492 + ... + 130567.

It is an arithmetic number, because the mean of its divisors is an integer number (1957950).

Almost surely, 2^9920242 is an apocalyptic number.

9920242 is a deficient number, since it is larger than the sum of its proper divisors (5743358).

9920242 is a wasteful number, since it uses less digits than its factorization.

9920242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261080.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 9920242 is about 3149.6415669088. The cubic root of 9920242 is about 214.8691614253.

The spelling of 9920242 in words is "nine million, nine hundred twenty thousand, two hundred forty-two".