74975143 has 4 divisors (see below), whose sum is σ = 77393728. Its totient is φ = 72556560.

The previous prime is 74975123. The next prime is 74975167. The reversal of 74975143 is 34157947.

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

It is a cyclic number.

It is not a de Polignac number, because 74975143 - 2⁹ = 74974631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74975096 and 74975105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74975123) 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 3 ways as a sum of consecutive naturals, for example, 1209246 + ... + 1209307.

It is an arithmetic number, because the mean of its divisors is an integer number (19348432).

Almost surely, 2^74975143 is an apocalyptic number.

74975143 is a deficient number, since it is larger than the sum of its proper divisors (2418585).

74975143 is a wasteful number, since it uses less digits than its factorization.

74975143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418584.

The product of its digits is 105840, while the sum is 40.

The square root of 74975143 is about 8658.8187993513. The cubic root of 74975143 is about 421.6697381568.

The spelling of 74975143 in words is "seventy-four million, nine hundred seventy-five thousand, one hundred forty-three".