42221023434 has 12 divisors (see below), whose sum is σ = 91478884146. Its totient is φ = 14073674472.

The previous prime is 42221023423. The next prime is 42221023441. The reversal of 42221023434 is 43432012224.

42221023434 is a `hidden beast` number, since 4 + 2 + 221 + 0 + 2 + 3 + 434 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39024817209 + 3196206225 = 197547^2 + 56535^2 .

It is a super-2 number, since 2×42221023434² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42221023398 and 42221023407.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172806189 + ... + 1172806224.

Almost surely, 2^42221023434 is an apocalyptic number.

42221023434 is an abundant number, since it is smaller than the sum of its proper divisors (49257860712).

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

42221023434 is a wasteful number, since it uses less digits than its factorization.

42221023434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345612421 (or 2345612418 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 42221023434 its reverse (43432012224), we get a palindrome (85653035658).

The spelling of 42221023434 in words is "forty-two billion, two hundred twenty-one million, twenty-three thousand, four hundred thirty-four".