120776321 has 4 divisors (see below), whose sum is σ = 121845252. Its totient is φ = 119707392.

The previous prime is 120776303. The next prime is 120776351. The reversal of 120776321 is 123677021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123677021 = 13 ⋅9513617.

It can be written as a sum of positive squares in 2 ways, for example, as 19492225 + 101284096 = 4415^2 + 10064^2 .

It is a cyclic number.

It is not a de Polignac number, because 120776321 - 2²² = 116582017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120776351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534296 + ... + 534521.

It is an arithmetic number, because the mean of its divisors is an integer number (30461313).

Almost surely, 2^120776321 is an apocalyptic number.

It is an amenable number.

120776321 is a deficient number, since it is larger than the sum of its proper divisors (1068931).

120776321 is a wasteful number, since it uses less digits than its factorization.

120776321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068930.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 120776321 is about 10989.8280696288. The cubic root of 120776321 is about 494.3037806021.

The spelling of 120776321 in words is "one hundred twenty million, seven hundred seventy-six thousand, three hundred twenty-one".