74530143 has 12 divisors (see below), whose sum is σ = 112335600. Its totient is φ = 47526336.

The previous prime is 74530139. The next prime is 74530147. The reversal of 74530143 is 34103547.

It is an interprime number because it is at equal distance from previous prime (74530139) and next prime (74530147).

It is not a de Polignac number, because 74530143 - 2² = 74530139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74530147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179818 + ... + 180231.

It is an arithmetic number, because the mean of its divisors is an integer number (9361300).

Almost surely, 2^74530143 is an apocalyptic number.

74530143 is a deficient number, since it is larger than the sum of its proper divisors (37805457).

74530143 is a wasteful number, since it uses less digits than its factorization.

74530143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360078 (or 360075 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 74530143 is about 8633.0842113349. The cubic root of 74530143 is about 420.8338366646.

The spelling of 74530143 in words is "seventy-four million, five hundred thirty thousand, one hundred forty-three".