20420032522 has 4 divisors (see below), whose sum is σ = 30630048786. Its totient is φ = 10210016260.

The previous prime is 20420032517. The next prime is 20420032553. The reversal of 20420032522 is 22523002402.

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., 19881282001 + 538750521 = 141001^2 + 23211^2 .

It is a Smith number, since the sum of its digits (22) 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 = 20420032493 and 20420032502.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105008129 + ... + 5105008132.

Almost surely, 2^20420032522 is an apocalyptic number.

20420032522 is a deficient number, since it is larger than the sum of its proper divisors (10210016264).

20420032522 is a wasteful number, since it uses less digits than its factorization.

20420032522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210016263.

The product of its (nonzero) digits is 1920, while the sum is 22.

Adding to 20420032522 its reverse (22523002402), we get a palindrome (42943034924).

The spelling of 20420032522 in words is "twenty billion, four hundred twenty million, thirty-two thousand, five hundred twenty-two".