142201231 has 2 divisors, whose sum is σ = 142201232. Its totient is φ = 142201230.

The previous prime is 142201229. The next prime is 142201237. The reversal of 142201231 is 132102241.

It is a weak prime.

It is an emirp because it is prime and its reverse (132102241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142201231 - 2¹ = 142201229 is a prime.

It is a super-2 number, since 2×142201231² = 40442380195830722, which contains 22 as substring.

Together with 142201229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142201237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71100615 + 71100616.

It is an arithmetic number, because the mean of its divisors is an integer number (71100616).

Almost surely, 2^142201231 is an apocalyptic number.

142201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

142201231 is an equidigital number, since it uses as much as digits as its factorization.

142201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 142201231 is about 11924.8157637760. The cubic root of 142201231 is about 521.9566703121.

Adding to 142201231 its reverse (132102241), we get a palindrome (274303472).

It can be divided in two parts, 14220 and 1231, that added together give a palindrome (15451).

The spelling of 142201231 in words is "one hundred forty-two million, two hundred one thousand, two hundred thirty-one".