20041142249 has 2 divisors, whose sum is σ = 20041142250. Its totient is φ = 20041142248.

The previous prime is 20041142237. The next prime is 20041142371. The reversal of 20041142249 is 94224114002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15266332249 + 4774810000 = 123557^2 + 69100^2 .

It is a cyclic number.

It is not a de Polignac number, because 20041142249 - 2¹² = 20041138153 is a prime.

It is not a weakly prime, because it can be changed into another prime (20041147249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020571124 + 10020571125.

It is an arithmetic number, because the mean of its divisors is an integer number (10020571125).

Almost surely, 2^20041142249 is an apocalyptic number.

It is an amenable number.

20041142249 is a deficient number, since it is larger than the sum of its proper divisors (1).

20041142249 is an equidigital number, since it uses as much as digits as its factorization.

20041142249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 20041142249 in words is "twenty billion, forty-one million, one hundred forty-two thousand, two hundred forty-nine".