75120871 has 24 divisors (see below), whose sum is σ = 90558864. Its totient is φ = 62092800.

The previous prime is 75120847. The next prime is 75120901. The reversal of 75120871 is 17802157.

It is a happy number.

It is not a de Polignac number, because 75120871 - 2⁹ = 75120359 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 (75120271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 212631 + ... + 212983.

It is an arithmetic number, because the mean of its divisors is an integer number (3773286).

Almost surely, 2^75120871 is an apocalyptic number.

75120871 is a deficient number, since it is larger than the sum of its proper divisors (15437993).

75120871 is a wasteful number, since it uses less digits than its factorization.

75120871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 75120871 is about 8667.2297188894. The cubic root of 75120871 is about 421.9427589454.

The spelling of 75120871 in words is "seventy-five million, one hundred twenty thousand, eight hundred seventy-one".