220110642 has 16 divisors (see below), whose sum is σ = 489134880. Its totient is φ = 73370196.

The previous prime is 220110641. The next prime is 220110659. The reversal of 220110642 is 246011022.

220110642 is a `hidden beast` number, since 2 + 20 + 1 + 1 + 0 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (220110641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038008 + ... + 2038115.

It is an arithmetic number, because the mean of its divisors is an integer number (30570930).

Almost surely, 2^220110642 is an apocalyptic number.

220110642 is an abundant number, since it is smaller than the sum of its proper divisors (269024238).

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

220110642 is a wasteful number, since it uses less digits than its factorization.

220110642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4076134 (or 4076128 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 220110642 is about 14836.1262464297. The cubic root of 220110642 is about 603.7822574486.

Adding to 220110642 its reverse (246011022), we get a palindrome (466121664).

The spelling of 220110642 in words is "two hundred twenty million, one hundred ten thousand, six hundred forty-two".