42242664 has 32 divisors (see below), whose sum is σ = 105768000. Its totient is φ = 14059392.

The previous prime is 42242663. The next prime is 42242699. The reversal of 42242664 is 46624224.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (42242663) 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, 26317 + ... + 27875.

It is an arithmetic number, because the mean of its divisors is an integer number (3305250).

Almost surely, 2^42242664 is an apocalyptic number.

It is an amenable number.

42242664 is an abundant number, since it is smaller than the sum of its proper divisors (63525336).

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

42242664 is a wasteful number, since it uses less digits than its factorization.

42242664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697 (or 2693 counting only the distinct ones).

The product of its digits is 18432, while the sum is 30.

The square root of 42242664 is about 6499.4356678099. The cubic root of 42242664 is about 348.2708289418.

Adding to 42242664 its reverse (46624224), we get a palindrome (88866888).

The spelling of 42242664 in words is "forty-two million, two hundred forty-two thousand, six hundred sixty-four".