120997047 has 4 divisors (see below), whose sum is σ = 161329400. Its totient is φ = 80664696.

The previous prime is 120997031. The next prime is 120997049. The reversal of 120997047 is 740799021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120997047 - 2⁴ = 120997031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120996996 and 120997014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120997049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20166172 + ... + 20166177.

It is an arithmetic number, because the mean of its divisors is an integer number (40332350).

Almost surely, 2^120997047 is an apocalyptic number.

120997047 is a deficient number, since it is larger than the sum of its proper divisors (40332353).

120997047 is an equidigital number, since it uses as much as digits as its factorization.

120997047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40332352.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 120997047 is about 10999.8657719083. The cubic root of 120997047 is about 494.6047206568.

The spelling of 120997047 in words is "one hundred twenty million, nine hundred ninety-seven thousand, forty-seven".