142830557 has 2 divisors, whose sum is σ = 142830558. Its totient is φ = 142830556.

The previous prime is 142830551. The next prime is 142830599. The reversal of 142830557 is 755038241.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137499076 + 5331481 = 11726^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 142830557 - 2¹⁴ = 142814173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142830551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71415278 + 71415279.

It is an arithmetic number, because the mean of its divisors is an integer number (71415279).

Almost surely, 2^142830557 is an apocalyptic number.

It is an amenable number.

142830557 is a deficient number, since it is larger than the sum of its proper divisors (1).

142830557 is an equidigital number, since it uses as much as digits as its factorization.

142830557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 142830557 is about 11951.1738753982. The cubic root of 142830557 is about 522.7255279699.

Adding to 142830557 its reverse (755038241), we get a palindrome (897868798).

The spelling of 142830557 in words is "one hundred forty-two million, eight hundred thirty thousand, five hundred fifty-seven".