142236137 has 2 divisors, whose sum is σ = 142236138. Its totient is φ = 142236136.

The previous prime is 142236119. The next prime is 142236169. The reversal of 142236137 is 731632241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101989801 + 40246336 = 10099^2 + 6344^2 .

It is a cyclic number.

It is not a de Polignac number, because 142236137 - 2²² = 138041833 is a prime.

It is a super-2 number, since 2×142236137² = 40462237337365538, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142236737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71118068 + 71118069.

It is an arithmetic number, because the mean of its divisors is an integer number (71118069).

Almost surely, 2^142236137 is an apocalyptic number.

It is an amenable number.

142236137 is a deficient number, since it is larger than the sum of its proper divisors (1).

142236137 is an equidigital number, since it uses as much as digits as its factorization.

142236137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 29.

The square root of 142236137 is about 11926.2792605238. The cubic root of 142236137 is about 521.9993748861. Note that the first 3 decimals are identical.

Adding to 142236137 its reverse (731632241), we get a palindrome (873868378).

The spelling of 142236137 in words is "one hundred forty-two million, two hundred thirty-six thousand, one hundred thirty-seven".