142440011251 has 2 divisors, whose sum is σ = 142440011252. Its totient is φ = 142440011250.

The previous prime is 142440011191. The next prime is 142440011257. The reversal of 142440011251 is 152110044241.

It is a strong prime.

It is an emirp because it is prime and its reverse (152110044241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142440011251 - 2⁷ = 142440011123 is a prime.

It is not a weakly prime, because it can be changed into another prime (142440011257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71220005625 + 71220005626.

It is an arithmetic number, because the mean of its divisors is an integer number (71220005626).

Almost surely, 2^142440011251 is an apocalyptic number.

142440011251 is a deficient number, since it is larger than the sum of its proper divisors (1).

142440011251 is an equidigital number, since it uses as much as digits as its factorization.

142440011251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 142440011251 its reverse (152110044241), we get a palindrome (294550055492).

The spelling of 142440011251 in words is "one hundred forty-two billion, four hundred forty million, eleven thousand, two hundred fifty-one".