42444642 has 16 divisors (see below), whose sum is σ = 87628032. Its totient is φ = 13691760.

The previous prime is 42444629. The next prime is 42444643. The reversal of 42444642 is 24644424.

42444642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42444643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113913 + ... + 114284.

It is an arithmetic number, because the mean of its divisors is an integer number (5476752).

Almost surely, 2^42444642 is an apocalyptic number.

42444642 is an abundant number, since it is smaller than the sum of its proper divisors (45183390).

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

42444642 is a wasteful number, since it uses less digits than its factorization.

42444642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228233.

The product of its digits is 24576, while the sum is 30.

The square root of 42444642 is about 6514.9552569454. The cubic root of 42444642 is about 348.8250177132.

The spelling of 42444642 in words is "forty-two million, four hundred forty-four thousand, six hundred forty-two".