74124643 has 8 divisors (see below), whose sum is σ = 78120720. Its totient is φ = 70138080.

The previous prime is 74124637. The next prime is 74124649. The reversal of 74124643 is 34642147.

It is an interprime number because it is at equal distance from previous prime (74124637) and next prime (74124649).

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 74124643 - 2¹³ = 74116451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74124649) 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 7 ways as a sum of consecutive naturals, for example, 18321 + ... + 21997.

It is an arithmetic number, because the mean of its divisors is an integer number (9765090).

Almost surely, 2^74124643 is an apocalyptic number.

74124643 is a deficient number, since it is larger than the sum of its proper divisors (3996077).

74124643 is a wasteful number, since it uses less digits than its factorization.

74124643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757.

The product of its digits is 16128, while the sum is 31.

The square root of 74124643 is about 8609.5669461361. The cubic root of 74124643 is about 420.0692308401.

The spelling of 74124643 in words is "seventy-four million, one hundred twenty-four thousand, six hundred forty-three".