42555550 has 24 divisors (see below), whose sum is σ = 81296136. Its totient is φ = 16561440.

The previous prime is 42555523. The next prime is 42555571. The reversal of 42555550 is 5555524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9652 + ... + 13351.

It is an arithmetic number, because the mean of its divisors is an integer number (3387339).

Almost surely, 2^42555550 is an apocalyptic number.

42555550 is a deficient number, since it is larger than the sum of its proper divisors (38740586).

42555550 is a wasteful number, since it uses less digits than its factorization.

42555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23052 (or 23047 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 31.

The square root of 42555550 is about 6523.4615044469. The cubic root of 42555550 is about 349.1285804657.

The spelling of 42555550 in words is "forty-two million, five hundred fifty-five thousand, five hundred fifty".