42944554 has 4 divisors (see below), whose sum is σ = 64416834. Its totient is φ = 21472276.

The previous prime is 42944543. The next prime is 42944569. The reversal of 42944554 is 45544924.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 2812329 = 6335^2 + 1677^2 .

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, 10736137 + ... + 10736140.

Almost surely, 2^42944554 is an apocalyptic number.

42944554 is a deficient number, since it is larger than the sum of its proper divisors (21472280).

42944554 is a wasteful number, since it uses less digits than its factorization.

42944554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21472279.

The product of its digits is 115200, while the sum is 37.

The square root of 42944554 is about 6553.2094427082. The cubic root of 42944554 is about 350.1891603334.

The spelling of 42944554 in words is "forty-two million, nine hundred forty-four thousand, five hundred fifty-four".