20142055457 has 2 divisors, whose sum is σ = 20142055458. Its totient is φ = 20142055456.

The previous prime is 20142055411. The next prime is 20142055471. The reversal of 20142055457 is 75455024102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16953081616 + 3188973841 = 130204^2 + 56471^2 .

It is a cyclic number.

It is not a de Polignac number, because 20142055457 - 2¹⁰ = 20142054433 is a prime.

It is not a weakly prime, because it can be changed into another prime (20142055757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10071027728 + 10071027729.

It is an arithmetic number, because the mean of its divisors is an integer number (10071027729).

Almost surely, 2^20142055457 is an apocalyptic number.

It is an amenable number.

20142055457 is a deficient number, since it is larger than the sum of its proper divisors (1).

20142055457 is an equidigital number, since it uses as much as digits as its factorization.

20142055457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56000, while the sum is 35.

Adding to 20142055457 its reverse (75455024102), we get a palindrome (95597079559).

The spelling of 20142055457 in words is "twenty billion, one hundred forty-two million, fifty-five thousand, four hundred fifty-seven".