120001420 has 96 divisors (see below), whose sum is σ = 325140480. Its totient is φ = 36099840.

The previous prime is 120001393. The next prime is 120001423. The reversal of 120001420 is 24100021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120001397 and 120001406.

It is not an unprimeable number, because it can be changed into a prime (120001423) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 43317 + ... + 46003.

It is an arithmetic number, because the mean of its divisors is an integer number (3386880).

Almost surely, 2^120001420 is an apocalyptic number.

120001420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120001420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162570240).

120001420 is an abundant number, since it is smaller than the sum of its proper divisors (205139060).

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

120001420 is a wasteful number, since it uses less digits than its factorization.

120001420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2743 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120001420 is about 10954.5159637476. The cubic root of 120001420 is about 493.2443604257.

Adding to 120001420 its reverse (24100021), we get a palindrome (144101441).

The spelling of 120001420 in words is "one hundred twenty million, one thousand, four hundred twenty".