120001020 has 48 divisors (see below), whose sum is σ = 341029248. Its totient is φ = 31521600.

The previous prime is 120001019. The next prime is 120001067. The reversal of 120001020 is 20100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10906 + ... + 18945.

It is an arithmetic number, because the mean of its divisors is an integer number (7104776).

Almost surely, 2^120001020 is an apocalyptic number.

120001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001020 is an abundant number, since it is smaller than the sum of its proper divisors (221028228).

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

120001020 is a wasteful number, since it uses less digits than its factorization.

120001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29930 (or 29928 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 120001020 is about 10954.4977064218. The cubic root of 120001020 is about 493.2438123823.

Adding to 120001020 its reverse (20100021), we get a palindrome (140101041).

Subtracting from 120001020 its reverse (20100021), we obtain a palindrome (99900999).

The spelling of 120001020 in words is "one hundred twenty million, one thousand, twenty".