42744258 has 54 divisors (see below), whose sum is σ = 98280819. Its totient is φ = 13425192.

The previous prime is 42744227. The next prime is 42744271. The reversal of 42744258 is 85244724.

It can be written as a sum of positive squares in only one way, i.e., 21372129 + 21372129 = 4623^2 + 4623^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=4623.

It is a Curzon number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 637941 + ... + 638007.

Almost surely, 2^42744258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42744258

42744258 is an abundant number, since it is smaller than the sum of its proper divisors (55536561).

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

42744258 is a wasteful number, since it uses less digits than its factorization.

42744258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 95 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 42744258 is about 6537.9092988508. The cubic root of 42744258 is about 349.6438772260.

The spelling of 42744258 in words is "forty-two million, seven hundred forty-four thousand, two hundred fifty-eight".