74257242 has 8 divisors (see below), whose sum is σ = 148514496. Its totient is φ = 24752412.

The previous prime is 74257237. The next prime is 74257247. The reversal of 74257242 is 24275247.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74257237) and next prime (74257247).

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

74257242 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (74257247) 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 3 ways as a sum of consecutive naturals, for example, 6188098 + ... + 6188109.

It is an arithmetic number, because the mean of its divisors is an integer number (18564312).

Almost surely, 2^74257242 is an apocalyptic number.

74257242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74257242 is a wasteful number, since it uses less digits than its factorization.

74257242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12376212.

The product of its digits is 31360, while the sum is 33.

The square root of 74257242 is about 8617.2641830224. The cubic root of 74257242 is about 420.3195640489.

The spelling of 74257242 in words is "seventy-four million, two hundred fifty-seven thousand, two hundred forty-two".