142104247 has 2 divisors, whose sum is σ = 142104248. Its totient is φ = 142104246.

The previous prime is 142104233. The next prime is 142104257. The reversal of 142104247 is 742401241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142104247 - 2²⁷ = 7886519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142104257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71052123 + 71052124.

It is an arithmetic number, because the mean of its divisors is an integer number (71052124).

Almost surely, 2^142104247 is an apocalyptic number.

142104247 is a deficient number, since it is larger than the sum of its proper divisors (1).

142104247 is an equidigital number, since it uses as much as digits as its factorization.

142104247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 142104247 is about 11920.7485922655. The cubic root of 142104247 is about 521.8379817982.

Adding to 142104247 its reverse (742401241), we get a palindrome (884505488).

The spelling of 142104247 in words is "one hundred forty-two million, one hundred four thousand, two hundred forty-seven".