74542427 has 8 divisors (see below), whose sum is σ = 76096320. Its totient is φ = 72999360.

The previous prime is 74542409. The next prime is 74542493. The reversal of 74542427 is 72424547.

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 74542427 - 2²⁰ = 73493851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74542627) 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, 12023 + ... + 17135.

It is an arithmetic number, because the mean of its divisors is an integer number (9512040).

Almost surely, 2^74542427 is an apocalyptic number.

74542427 is a deficient number, since it is larger than the sum of its proper divisors (1553893).

74542427 is a wasteful number, since it uses less digits than its factorization.

74542427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5413.

The product of its digits is 62720, while the sum is 35.

The square root of 74542427 is about 8633.7956311231. The cubic root of 74542427 is about 420.8569558960.

The spelling of 74542427 in words is "seventy-four million, five hundred forty-two thousand, four hundred twenty-seven".