120142220 has 24 divisors (see below), whose sum is σ = 275235408. Its totient is φ = 43688000.

The previous prime is 120142201. The next prime is 120142237. The reversal of 120142220 is 22241021.

It is a junction number, because it is equal to n+sod(n) for n = 120142195 and 120142204.

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, 272831 + ... + 273270.

It is an arithmetic number, because the mean of its divisors is an integer number (11468142).

Almost surely, 2^120142220 is an apocalyptic number.

120142220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120142220 is an abundant number, since it is smaller than the sum of its proper divisors (155093188).

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

120142220 is a wasteful number, since it uses less digits than its factorization.

120142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546121 (or 546119 counting only the distinct ones).

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

The square root of 120142220 is about 10960.9406530644. The cubic root of 120142220 is about 493.4371960932.

Adding to 120142220 its reverse (22241021), we get a palindrome (142383241).

The spelling of 120142220 in words is "one hundred twenty million, one hundred forty-two thousand, two hundred twenty".