42064242 has 16 divisors (see below), whose sum is σ = 91776672. Its totient is φ = 12746720.

The previous prime is 42064223. The next prime is 42064247. The reversal of 42064242 is 24246024.

It is not an unprimeable number, because it can be changed into a prime (42064247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318603 + ... + 318734.

It is an arithmetic number, because the mean of its divisors is an integer number (5736042).

Almost surely, 2^42064242 is an apocalyptic number.

42064242 is an abundant number, since it is smaller than the sum of its proper divisors (49712430).

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

42064242 is a wasteful number, since it uses less digits than its factorization.

42064242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637353.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 42064242 is about 6485.6951824766. The cubic root of 42064242 is about 347.7798019059.

It can be divided in two parts, 4206 and 4242, that added together give a palindrome (8448).

The spelling of 42064242 in words is "forty-two million, sixty-four thousand, two hundred forty-two".