142151251309 has 2 divisors, whose sum is σ = 142151251310. Its totient is φ = 142151251308.

The previous prime is 142151251261. The next prime is 142151251367. The reversal of 142151251309 is 903152151241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118256893225 + 23894358084 = 343885^2 + 154578^2 .

It is a cyclic number.

It is not a de Polignac number, because 142151251309 - 2¹⁹ = 142150727021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142151251369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71075625654 + 71075625655.

It is an arithmetic number, because the mean of its divisors is an integer number (71075625655).

Almost surely, 2^142151251309 is an apocalyptic number.

It is an amenable number.

142151251309 is a deficient number, since it is larger than the sum of its proper divisors (1).

142151251309 is an equidigital number, since it uses as much as digits as its factorization.

142151251309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 142151251309 in words is "one hundred forty-two billion, one hundred fifty-one million, two hundred fifty-one thousand, three hundred nine".