120643471 has 4 divisors (see below), whose sum is σ = 129923752. Its totient is φ = 111363192.

The previous prime is 120643429. The next prime is 120643477. The reversal of 120643471 is 174346021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174346021 = 661 ⋅263761.

It is a cyclic number.

It is not a de Polignac number, because 120643471 - 2⁷ = 120643343 is a prime.

It is a super-3 number, since 3×120643471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120643477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4640121 + ... + 4640146.

It is an arithmetic number, because the mean of its divisors is an integer number (32480938).

Almost surely, 2^120643471 is an apocalyptic number.

120643471 is a deficient number, since it is larger than the sum of its proper divisors (9280281).

120643471 is an equidigital number, since it uses as much as digits as its factorization.

120643471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9280280.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 120643471 is about 10983.7821810158. The cubic root of 120643471 is about 494.1224747825.

Adding to 120643471 its reverse (174346021), we get a palindrome (294989492).

The spelling of 120643471 in words is "one hundred twenty million, six hundred forty-three thousand, four hundred seventy-one".