42549554 has 24 divisors (see below), whose sum is σ = 67823028. Its totient is φ = 20007680.

The previous prime is 42549541. The next prime is 42549557. The reversal of 42549554 is 45594524.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2036329 + 40513225 = 1427^2 + 6365^2 .

It is not an unprimeable number, because it can be changed into a prime (42549557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68654 + ... + 69270.

Almost surely, 2^42549554 is an apocalyptic number.

42549554 is a deficient number, since it is larger than the sum of its proper divisors (25273474).

42549554 is a wasteful number, since it uses less digits than its factorization.

42549554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 689 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 42549554 is about 6523.0019162959. The cubic root of 42549554 is about 349.1121825004.

The spelling of 42549554 in words is "forty-two million, five hundred forty-nine thousand, five hundred fifty-four".