120951971 has 4 divisors (see below), whose sum is σ = 138230832. Its totient is φ = 103673112.

The previous prime is 120951913. The next prime is 120951977. The reversal of 120951971 is 179159021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179159021 = 487 ⋅367883.

It is a cyclic number.

It is not a de Polignac number, because 120951971 - 2²⁶ = 53843107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120951977) 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, 8639420 + ... + 8639433.

It is an arithmetic number, because the mean of its divisors is an integer number (34557708).

Almost surely, 2^120951971 is an apocalyptic number.

120951971 is a deficient number, since it is larger than the sum of its proper divisors (17278861).

120951971 is an equidigital number, since it uses as much as digits as its factorization.

120951971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17278860.

The product of its (nonzero) digits is 5670, while the sum is 35.

The square root of 120951971 is about 10997.8166469532. The cubic root of 120951971 is about 494.5432933408.

The spelling of 120951971 in words is "one hundred twenty million, nine hundred fifty-one thousand, nine hundred seventy-one".