120774821 has 8 divisors (see below), whose sum is σ = 125194080. Its totient is φ = 116372592.

The previous prime is 120774809. The next prime is 120774833. The reversal of 120774821 is 128477021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120774809) and next prime (120774833).

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

It is a de Polignac number, because none of the positive numbers 2^k-120774821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120774881) 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 7 ways as a sum of consecutive naturals, for example, 11186 + ... + 19148.

It is an arithmetic number, because the mean of its divisors is an integer number (15649260).

Almost surely, 2^120774821 is an apocalyptic number.

It is an amenable number.

120774821 is a deficient number, since it is larger than the sum of its proper divisors (4419259).

120774821 is an equidigital number, since it uses as much as digits as its factorization.

120774821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8515.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 120774821 is about 10989.7598244912. The cubic root of 120774821 is about 494.3017342332.

The spelling of 120774821 in words is "one hundred twenty million, seven hundred seventy-four thousand, eight hundred twenty-one".