42402422030221 has 32 divisors (see below), whose sum is σ = 48040729390080. Its totient is φ = 37076685465600.

The previous prime is 42402422030147. The next prime is 42402422030231. The reversal of 42402422030221 is 12203022420424.

It is a happy number.

It is not a de Polignac number, because 42402422030221 - 2³⁷ = 42264983076749 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42402422030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402422030231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186835411 + ... + 187062223.

It is an arithmetic number, because the mean of its divisors is an integer number (1501272793440).

Almost surely, 2^{42402422030221} is an apocalyptic number.

It is an amenable number.

42402422030221 is a deficient number, since it is larger than the sum of its proper divisors (5638307359859).

42402422030221 is a wasteful number, since it uses less digits than its factorization.

42402422030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230197.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 42402422030221 its reverse (12203022420424), we get a palindrome (54605444450645).

The spelling of 42402422030221 in words is "forty-two trillion, four hundred two billion, four hundred twenty-two million, thirty thousand, two hundred twenty-one".