142207237 has 2 divisors, whose sum is σ = 142207238. Its totient is φ = 142207236.

The previous prime is 142207187. The next prime is 142207253. The reversal of 142207237 is 732702241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109956196 + 32251041 = 10486^2 + 5679^2 .

It is a cyclic number.

It is not a de Polignac number, because 142207237 - 2¹⁹ = 141682949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142207277) 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, 71103618 + 71103619.

It is an arithmetic number, because the mean of its divisors is an integer number (71103619).

Almost surely, 2^142207237 is an apocalyptic number.

It is an amenable number.

142207237 is a deficient number, since it is larger than the sum of its proper divisors (1).

142207237 is an equidigital number, since it uses as much as digits as its factorization.

142207237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 142207237 is about 11925.0675889070. The cubic root of 142207237 is about 521.9640186489.

Adding to 142207237 its reverse (732702241), we get a palindrome (874909478).

The spelling of 142207237 in words is "one hundred forty-two million, two hundred seven thousand, two hundred thirty-seven".