42421212424 has 8 divisors (see below), whose sum is σ = 79539773310. Its totient is φ = 21210606208.

The previous prime is 42421212373. The next prime is 42421212433.

It is a happy number.

42421212424 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 37021608100 + 5399604324 = 192410^2 + 73482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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

It is a junction number, because it is equal to n+sod(n) for n = 42421212392 and 42421212401.

It is an unprimeable number.

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, 2651325769 + ... + 2651325784.

Almost surely, 2^42421212424 is an apocalyptic number.

It is an amenable number.

42421212424 is a deficient number, since it is larger than the sum of its proper divisors (37118560886).

42421212424 is a wasteful number, since it uses less digits than its factorization.

42421212424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5302651559 (or 5302651555 counting only the distinct ones).

The product of its digits is 8192, while the sum is 28.

The spelling of 42421212424 in words is "forty-two billion, four hundred twenty-one million, two hundred twelve thousand, four hundred twenty-four".