1220100242 has 8 divisors (see below), whose sum is σ = 1847254896. Its totient is φ = 604348612.

The previous prime is 1220100221. The next prime is 1220100269. The reversal of 1220100242 is 2420010221.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2850488 + ... + 2850915.

It is an arithmetic number, because the mean of its divisors is an integer number (230906862).

Almost surely, 2^1220100242 is an apocalyptic number.

1220100242 is a deficient number, since it is larger than the sum of its proper divisors (627154654).

1220100242 is a wasteful number, since it uses less digits than its factorization.

1220100242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701512.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1220100242 is about 34929.9333237268. The cubic root of 1220100242 is about 1068.5589948002.

Adding to 1220100242 its reverse (2420010221), we get a palindrome (3640110463).

The spelling of 1220100242 in words is "one billion, two hundred twenty million, one hundred thousand, two hundred forty-two".