42555844 has 6 divisors (see below), whose sum is σ = 74472734. Its totient is φ = 21277920.

The previous prime is 42555833. The next prime is 42555869. The reversal of 42555844 is 44855524.

It can be written as a sum of positive squares in only one way, i.e., 32058244 + 10497600 = 5662^2 + 3240^2 .

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 as a sum of consecutive naturals, namely, 5319477 + ... + 5319484.

Almost surely, 2^42555844 is an apocalyptic number.

It is an amenable number.

42555844 is a deficient number, since it is larger than the sum of its proper divisors (31916890).

42555844 is a wasteful number, since it uses less digits than its factorization.

42555844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638965 (or 10638963 counting only the distinct ones).

The product of its digits is 128000, while the sum is 37.

The square root of 42555844 is about 6523.4840384568. The cubic root of 42555844 is about 349.1293844624.

The spelling of 42555844 in words is "forty-two million, five hundred fifty-five thousand, eight hundred forty-four".