120143591 has 8 divisors (see below), whose sum is σ = 123112704. Its totient is φ = 117182520.

The previous prime is 120143581. The next prime is 120143623. The reversal of 120143591 is 195341021.

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

It is a cyclic number.

It is not a de Polignac number, because 120143591 - 2¹⁴ = 120127207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120143591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120143501) 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 7 ways as a sum of consecutive naturals, for example, 37640 + ... + 40706.

It is an arithmetic number, because the mean of its divisors is an integer number (15389088).

Almost surely, 2^120143591 is an apocalyptic number.

120143591 is a deficient number, since it is larger than the sum of its proper divisors (2969113).

120143591 is an equidigital number, since it uses as much as digits as its factorization.

120143591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 120143591 is about 10961.0031931388. The cubic root of 120143591 is about 493.4390730349.

The spelling of 120143591 in words is "one hundred twenty million, one hundred forty-three thousand, five hundred ninety-one".