20606321242 has 32 divisors (see below), whose sum is σ = 34143152400. Its totient is φ = 9268446720.

The previous prime is 20606321221. The next prime is 20606321279. The reversal of 20606321242 is 24212360602.

It can be written as a sum of positive squares in 8 ways, for example, as 1476941761 + 19129379481 = 38431^2 + 138309^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20606321242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155142 + ... + 255502.

Almost surely, 2^20606321242 is an apocalyptic number.

20606321242 is a deficient number, since it is larger than the sum of its proper divisors (13536831158).

20606321242 is a wasteful number, since it uses less digits than its factorization.

20606321242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100578.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20606321242 its reverse (24212360602), we get a palindrome (44818681844).

The spelling of 20606321242 in words is "twenty billion, six hundred six million, three hundred twenty-one thousand, two hundred forty-two".