120813771 has 8 divisors (see below), whose sum is σ = 173476240. Its totient is φ = 74346912.

The previous prime is 120813767. The next prime is 120813773. The reversal of 120813771 is 177318021.

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

It is not a de Polignac number, because 120813771 - 2² = 120813767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120813773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1548856 + ... + 1548933.

It is an arithmetic number, because the mean of its divisors is an integer number (21684530).

Almost surely, 2^120813771 is an apocalyptic number.

120813771 is a deficient number, since it is larger than the sum of its proper divisors (52662469).

120813771 is a wasteful number, since it uses less digits than its factorization.

120813771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3097805.

The product of its (nonzero) digits is 2352, while the sum is 30.

The square root of 120813771 is about 10991.5317858795. The cubic root of 120813771 is about 494.3548661224.

The spelling of 120813771 in words is "one hundred twenty million, eight hundred thirteen thousand, seven hundred seventy-one".