120001266 has 144 divisors (see below), whose sum is σ = 346574592. Its totient is φ = 29272320.

The previous prime is 120001247. The next prime is 120001307. The reversal of 120001266 is 662100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 258951 + ... + 259413.

It is an arithmetic number, because the mean of its divisors is an integer number (2406768).

Almost surely, 2^120001266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120001266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173287296).

120001266 is an abundant number, since it is smaller than the sum of its proper divisors (226573326).

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

120001266 is a wasteful number, since it uses less digits than its factorization.

120001266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120001266 is about 10954.5089346807. The cubic root of 120001266 is about 493.2441494292.

Adding to 120001266 its reverse (662100021), we get a palindrome (782101287).

The spelling of 120001266 in words is "one hundred twenty million, one thousand, two hundred sixty-six".