120729261 has 16 divisors (see below), whose sum is σ = 166305024. Its totient is φ = 77845824.

The previous prime is 120729247. The next prime is 120729289. The reversal of 120729261 is 162927021.

It is not a de Polignac number, because 120729261 - 2⁶ = 120729197 is a prime.

It is a super-2 number, since 2×120729261² = 29151108923212242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120725261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16060 + ... + 22346.

It is an arithmetic number, because the mean of its divisors is an integer number (10394064).

Almost surely, 2^120729261 is an apocalyptic number.

It is an amenable number.

120729261 is a deficient number, since it is larger than the sum of its proper divisors (45575763).

120729261 is a wasteful number, since it uses less digits than its factorization.

120729261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6500.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 120729261 is about 10987.6867902211. The cubic root of 120729261 is about 494.2395711123.

The spelling of 120729261 in words is "one hundred twenty million, seven hundred twenty-nine thousand, two hundred sixty-one".