42220522100434 has 4 divisors (see below), whose sum is σ = 63330783150654. Its totient is φ = 21110261050216.

The previous prime is 42220522100399. The next prime is 42220522100437. The reversal of 42220522100434 is 43400122502224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28756781626225 + 13463740474209 = 5362535^2 + 3669297^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42220522100396 and 42220522100405.

It is not an unprimeable number, because it can be changed into a prime (42220522100437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555130525107 + ... + 10555130525110.

Almost surely, 2^{42220522100434} is an apocalyptic number.

42220522100434 is a deficient number, since it is larger than the sum of its proper divisors (21110261050220).

42220522100434 is a wasteful number, since it uses less digits than its factorization.

42220522100434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21110261050219.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 42220522100434 its reverse (43400122502224), we get a palindrome (85620644602658).

The spelling of 42220522100434 in words is "forty-two trillion, two hundred twenty billion, five hundred twenty-two million, one hundred thousand, four hundred thirty-four".