142005503 has 2 divisors, whose sum is σ = 142005504. Its totient is φ = 142005502.

The previous prime is 142005481. The next prime is 142005517. The reversal of 142005503 is 305500241.

It is a strong prime.

It is an emirp because it is prime and its reverse (305500241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142005503 - 2⁸ = 142005247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142005583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71002751 + 71002752.

It is an arithmetic number, because the mean of its divisors is an integer number (71002752).

Almost surely, 2^142005503 is an apocalyptic number.

142005503 is a deficient number, since it is larger than the sum of its proper divisors (1).

142005503 is an equidigital number, since it uses as much as digits as its factorization.

142005503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 142005503 is about 11916.6061863267. The cubic root of 142005503 is about 521.7170839115.

Adding to 142005503 its reverse (305500241), we get a palindrome (447505744).

The spelling of 142005503 in words is "one hundred forty-two million, five thousand, five hundred three".