142910689 has 2 divisors, whose sum is σ = 142910690. Its totient is φ = 142910688.

The previous prime is 142910683. The next prime is 142910711. The reversal of 142910689 is 986019241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124992400 + 17918289 = 11180^2 + 4233^2 .

It is a cyclic number.

It is not a de Polignac number, because 142910689 - 2²¹ = 140813537 is a prime.

It is not a weakly prime, because it can be changed into another prime (142910683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71455344 + 71455345.

It is an arithmetic number, because the mean of its divisors is an integer number (71455345).

Almost surely, 2^142910689 is an apocalyptic number.

It is an amenable number.

142910689 is a deficient number, since it is larger than the sum of its proper divisors (1).

142910689 is an equidigital number, since it uses as much as digits as its factorization.

142910689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 142910689 is about 11954.5258793480. The cubic root of 142910689 is about 522.8232643181.

The spelling of 142910689 in words is "one hundred forty-two million, nine hundred ten thousand, six hundred eighty-nine".