120728255 has 8 divisors (see below), whose sum is σ = 145625712. Its totient is φ = 96081408.

The previous prime is 120728197. The next prime is 120728263. The reversal of 120728255 is 552827021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120728255 - 2⁶ = 120728191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61589 + ... + 63518.

It is an arithmetic number, because the mean of its divisors is an integer number (18203214).

Almost surely, 2^120728255 is an apocalyptic number.

120728255 is a deficient number, since it is larger than the sum of its proper divisors (24897457).

120728255 is a wasteful number, since it uses less digits than its factorization.

120728255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125305.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 120728255 is about 10987.6410116094. The cubic root of 120728255 is about 494.2381983261.

The spelling of 120728255 in words is "one hundred twenty million, seven hundred twenty-eight thousand, two hundred fifty-five".