120809775 has 12 divisors (see below), whose sum is σ = 199738952. Its totient is φ = 64431840.

The previous prime is 120809749. The next prime is 120809797. The reversal of 120809775 is 577908021.

It is not a de Polignac number, because 120809775 - 2⁵ = 120809743 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 805324 + ... + 805473.

Almost surely, 2^120809775 is an apocalyptic number.

120809775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120809775 is a deficient number, since it is larger than the sum of its proper divisors (78929177).

120809775 is a wasteful number, since it uses less digits than its factorization.

120809775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610810 (or 1610805 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 120809775 is about 10991.3500080745. The cubic root of 120809775 is about 494.3494156846.

The spelling of 120809775 in words is "one hundred twenty million, eight hundred nine thousand, seven hundred seventy-five".