42043242 has 16 divisors (see below), whose sum is σ = 84604320. Its totient is φ = 13928112.

The previous prime is 42043229. The next prime is 42043249. The reversal of 42043242 is 24234024.

It is not an unprimeable number, because it can be changed into a prime (42043249) 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 in 7 ways as a sum of consecutive naturals, for example, 20517 + ... + 22472.

It is an arithmetic number, because the mean of its divisors is an integer number (5287770).

Almost surely, 2^42043242 is an apocalyptic number.

42043242 is an abundant number, since it is smaller than the sum of its proper divisors (42561078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42043242 is a wasteful number, since it uses less digits than its factorization.

42043242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43157.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 42043242 is about 6484.0760328670. The cubic root of 42043242 is about 347.7219174955.

Adding to 42043242 its reverse (24234024), we get a palindrome (66277266).

The spelling of 42043242 in words is "forty-two million, forty-three thousand, two hundred forty-two".