74451343 has 4 divisors (see below), whose sum is σ = 74554480. Its totient is φ = 74348208.

The previous prime is 74451341. The next prime is 74451353. The reversal of 74451343 is 34315447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34315447 = 941 ⋅36467.

It is a cyclic number.

It is not a de Polignac number, because 74451343 - 2¹ = 74451341 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 (74451341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50478 + ... + 51931.

It is an arithmetic number, because the mean of its divisors is an integer number (18638620).

Almost surely, 2^74451343 is an apocalyptic number.

74451343 is a deficient number, since it is larger than the sum of its proper divisors (103137).

74451343 is a wasteful number, since it uses less digits than its factorization.

74451343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103136.

The product of its digits is 20160, while the sum is 31.

The square root of 74451343 is about 8628.5191661142. The cubic root of 74451343 is about 420.6854698471.

The spelling of 74451343 in words is "seventy-four million, four hundred fifty-one thousand, three hundred forty-three".