120811420 has 24 divisors (see below), whose sum is σ = 259893648. Its totient is φ = 47145600.

The previous prime is 120811403. The next prime is 120811421. The reversal of 120811420 is 24118021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120811421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72846 + ... + 74485.

It is an arithmetic number, because the mean of its divisors is an integer number (10828902).

Almost surely, 2^120811420 is an apocalyptic number.

120811420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120811420 is an abundant number, since it is smaller than the sum of its proper divisors (139082228).

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

120811420 is a wasteful number, since it uses less digits than its factorization.

120811420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147381 (or 147379 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 120811420 is about 10991.4248393918. The cubic root of 120811420 is about 494.3516594354.

Adding to 120811420 its reverse (24118021), we get a palindrome (144929441).

The spelling of 120811420 in words is "one hundred twenty million, eight hundred eleven thousand, four hundred twenty".