142421124149 has 2 divisors, whose sum is σ = 142421124150. Its totient is φ = 142421124148.

The previous prime is 142421124137. The next prime is 142421124169. The reversal of 142421124149 is 941421124241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139833367249 + 2587756900 = 373943^2 + 50870^2 .

It is a cyclic number.

It is not a de Polignac number, because 142421124149 - 2⁴ = 142421124133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142421124169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71210562074 + 71210562075.

It is an arithmetic number, because the mean of its divisors is an integer number (71210562075).

Almost surely, 2^142421124149 is an apocalyptic number.

It is an amenable number.

142421124149 is a deficient number, since it is larger than the sum of its proper divisors (1).

142421124149 is an equidigital number, since it uses as much as digits as its factorization.

142421124149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 35.

The spelling of 142421124149 in words is "one hundred forty-two billion, four hundred twenty-one million, one hundred twenty-four thousand, one hundred forty-nine".