120010391 has 4 divisors (see below), whose sum is σ = 122274792. Its totient is φ = 117745992.

The previous prime is 120010313. The next prime is 120010409. The reversal of 120010391 is 193010021.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120010391 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 (120010691) 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, 1132121 + ... + 1132226.

It is an arithmetic number, because the mean of its divisors is an integer number (30568698).

Almost surely, 2^120010391 is an apocalyptic number.

120010391 is a deficient number, since it is larger than the sum of its proper divisors (2264401).

120010391 is an equidigital number, since it uses as much as digits as its factorization.

120010391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264400.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 120010391 is about 10954.9254219278. The cubic root of 120010391 is about 493.2566513494.

The spelling of 120010391 in words is "one hundred twenty million, ten thousand, three hundred ninety-one".