120265566 has 16 divisors (see below), whose sum is σ = 241308288. Its totient is φ = 39959000.

The previous prime is 120265549. The next prime is 120265567. The reversal of 120265566 is 665562021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120265567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30360 + ... + 34091.

It is an arithmetic number, because the mean of its divisors is an integer number (15081768).

Almost surely, 2^120265566 is an apocalyptic number.

120265566 is an abundant number, since it is smaller than the sum of its proper divisors (121042722).

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

120265566 is a wasteful number, since it uses less digits than its factorization.

120265566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64767.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 120265566 is about 10966.5658252709. The cubic root of 120265566 is about 493.6060034933.

The spelling of 120265566 in words is "one hundred twenty million, two hundred sixty-five thousand, five hundred sixty-six".