42555572 has 6 divisors (see below), whose sum is σ = 74472258. Its totient is φ = 21277784.

The previous prime is 42555571. The next prime is 42555577. The reversal of 42555572 is 27555524.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 11262736 = 5594^2 + 3356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42555571) by changing a digit.

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, 5319443 + ... + 5319450.

It is an arithmetic number, because the mean of its divisors is an integer number (12412043).

Almost surely, 2^42555572 is an apocalyptic number.

It is an amenable number.

42555572 is a deficient number, since it is larger than the sum of its proper divisors (31916686).

42555572 is a wasteful number, since it uses less digits than its factorization.

42555572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638897 (or 10638895 counting only the distinct ones).

The product of its digits is 70000, while the sum is 35.

The square root of 42555572 is about 6523.4631906680. The cubic root of 42555572 is about 349.1286406288.

The spelling of 42555572 in words is "forty-two million, five hundred fifty-five thousand, five hundred seventy-two".