74257642 has 8 divisors (see below), whose sum is σ = 114103332. Its totient is φ = 36223200.

The previous prime is 74257637. The next prime is 74257657. The reversal of 74257642 is 24675247.

It can be written as a sum of positive squares in 2 ways, for example, as 55517401 + 18740241 = 7451^2 + 4329^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 452709 + ... + 452872.

Almost surely, 2^74257642 is an apocalyptic number.

74257642 is a deficient number, since it is larger than the sum of its proper divisors (39845690).

74257642 is a wasteful number, since it uses less digits than its factorization.

74257642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905624.

The product of its digits is 94080, while the sum is 37.

The square root of 74257642 is about 8617.2873922134. The cubic root of 74257642 is about 420.3203187565.

The spelling of 74257642 in words is "seventy-four million, two hundred fifty-seven thousand, six hundred forty-two".