42420064 has 12 divisors (see below), whose sum is σ = 83514564. Its totient is φ = 21210016.

The previous prime is 42420031. The next prime is 42420067. The reversal of 42420064 is 46002424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42420067) 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 as a sum of consecutive naturals, namely, 662782 + ... + 662845.

It is an arithmetic number, because the mean of its divisors is an integer number (6959547).

Almost surely, 2^42420064 is an apocalyptic number.

It is an amenable number.

42420064 is a deficient number, since it is larger than the sum of its proper divisors (41094500).

42420064 is a wasteful number, since it uses less digits than its factorization.

42420064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325637 (or 1325629 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42420064 is about 6513.0687083740. The cubic root of 42420064 is about 348.7576744927.

Adding to 42420064 its reverse (46002424), we get a palindrome (88422488).

The spelling of 42420064 in words is "forty-two million, four hundred twenty thousand, sixty-four".