220042120 has 32 divisors (see below), whose sum is σ = 495950400. Its totient is φ = 87864768.

The previous prime is 220042117. The next prime is 220042133. The reversal of 220042120 is 21240022.

It is a self number, because there is not a number n which added to its sum of digits gives 220042120.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20317 + ... + 29203.

It is an arithmetic number, because the mean of its divisors is an integer number (15498450).

Almost surely, 2^220042120 is an apocalyptic number.

220042120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220042120 is an abundant number, since it is smaller than the sum of its proper divisors (275908280).

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

220042120 is a wasteful number, since it uses less digits than its factorization.

220042120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9517 (or 9513 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 220042120 is about 14833.8167711483. The cubic root of 220042120 is about 603.7195970499.

Adding to 220042120 its reverse (21240022), we get a palindrome (241282142).

The spelling of 220042120 in words is "two hundred twenty million, forty-two thousand, one hundred twenty".