142803431 has 2 divisors, whose sum is σ = 142803432. Its totient is φ = 142803430.

The previous prime is 142803421. The next prime is 142803443. The reversal of 142803431 is 134308241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142803431 - 2²² = 138609127 is a prime.

It is a super-2 number, since 2×142803431² = 40785639810743522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142803431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142803421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71401715 + 71401716.

It is an arithmetic number, because the mean of its divisors is an integer number (71401716).

Almost surely, 2^142803431 is an apocalyptic number.

142803431 is a deficient number, since it is larger than the sum of its proper divisors (1).

142803431 is an equidigital number, since it uses as much as digits as its factorization.

142803431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 142803431 is about 11950.0389539114. The cubic root of 142803431 is about 522.6924343268.

The spelling of 142803431 in words is "one hundred forty-two million, eight hundred three thousand, four hundred thirty-one".