42043550 has 24 divisors (see below), whose sum is σ = 82802736. Its totient is φ = 15827840.

The previous prime is 42043549. The next prime is 42043553. The reversal of 42043550 is 5534024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42043553) 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, 23882 + ... + 25581.

It is an arithmetic number, because the mean of its divisors is an integer number (3450114).

Almost surely, 2^42043550 is an apocalyptic number.

42043550 is a deficient number, since it is larger than the sum of its proper divisors (40759186).

42043550 is a wasteful number, since it uses less digits than its factorization.

42043550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49492 (or 49487 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42043550 is about 6484.0997833161. The cubic root of 42043550 is about 347.7227666061.

Adding to 42043550 its reverse (5534024), we get a palindrome (47577574).

The spelling of 42043550 in words is "forty-two million, forty-three thousand, five hundred fifty".