42442226664420 has 48 divisors (see below), whose sum is σ = 129641710540608. Its totient is φ = 10289024645760.

The previous prime is 42442226664317. The next prime is 42442226664433. The reversal of 42442226664420 is 2446662224424.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42442226664420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32153201359 + ... + 32153202678.

It is an arithmetic number, because the mean of its divisors is an integer number (2700868969596).

Almost surely, 2^{42442226664420} is an apocalyptic number.

It is an amenable number.

42442226664420 is an abundant number, since it is smaller than the sum of its proper divisors (87199483876188).

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

42442226664420 is a wasteful number, since it uses less digits than its factorization.

42442226664420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64306404060 (or 64306404058 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 48.

Adding to 42442226664420 its reverse (2446662224424), we get a palindrome (44888888888844).

The spelling of 42442226664420 in words is "forty-two trillion, four hundred forty-two billion, two hundred twenty-six million, six hundred sixty-four thousand, four hundred twenty".