142811741 has 2 divisors, whose sum is σ = 142811742. Its totient is φ = 142811740.

The previous prime is 142811737. The next prime is 142811777. The reversal of 142811741 is 147118241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135815716 + 6996025 = 11654^2 + 2645^2 .

It is an emirp because it is prime and its reverse (147118241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142811741 - 2² = 142811737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142811731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71405870 + 71405871.

It is an arithmetic number, because the mean of its divisors is an integer number (71405871).

Almost surely, 2^142811741 is an apocalyptic number.

It is an amenable number.

142811741 is a deficient number, since it is larger than the sum of its proper divisors (1).

142811741 is an equidigital number, since it uses as much as digits as its factorization.

142811741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1792, while the sum is 29.

The square root of 142811741 is about 11950.3866464646. The cubic root of 142811741 is about 522.7025729485.

Adding to 142811741 its reverse (147118241), we get a palindrome (289929982).

The spelling of 142811741 in words is "one hundred forty-two million, eight hundred eleven thousand, seven hundred forty-one".