142120369 has 2 divisors, whose sum is σ = 142120370. Its totient is φ = 142120368.

The previous prime is 142120291. The next prime is 142120379. The reversal of 142120369 is 963021241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136890000 + 5230369 = 11700^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 142120369 - 2⁷ = 142120241 is a prime.

It is a super-2 number, since 2×142120369² = 40396398569392322, which contains 22 as substring.

It is a Chen prime.

It is equal to p_8025085 and since 142120369 and 8025085 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (142120379) 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, 71060184 + 71060185.

It is an arithmetic number, because the mean of its divisors is an integer number (71060185).

Almost surely, 2^142120369 is an apocalyptic number.

It is an amenable number.

142120369 is a deficient number, since it is larger than the sum of its proper divisors (1).

142120369 is an equidigital number, since it uses as much as digits as its factorization.

142120369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 142120369 is about 11921.4247890091. The cubic root of 142120369 is about 521.8577155594.

The spelling of 142120369 in words is "one hundred forty-two million, one hundred twenty thousand, three hundred sixty-nine".