74242743 has 8 divisors (see below), whose sum is σ = 99090288. Its totient is φ = 49445184.

The previous prime is 74242703. The next prime is 74242769. The reversal of 74242743 is 34724247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74242743 - 2¹⁷ = 74111671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74242703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8880 + ... + 15077.

It is an arithmetic number, because the mean of its divisors is an integer number (12386286).

Almost surely, 2^74242743 is an apocalyptic number.

74242743 is a deficient number, since it is larger than the sum of its proper divisors (24847545).

74242743 is a wasteful number, since it uses less digits than its factorization.

74242743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24993.

The product of its digits is 37632, while the sum is 33.

The square root of 74242743 is about 8616.4228656676. The cubic root of 74242743 is about 420.2922059539.

The spelling of 74242743 in words is "seventy-four million, two hundred forty-two thousand, seven hundred forty-three".