142126559 has 4 divisors (see below), whose sum is σ = 142182216. Its totient is φ = 142070904.

The previous prime is 142126553. The next prime is 142126561. The reversal of 142126559 is 955621241.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142126559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142126553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23804 + ... + 29169.

It is an arithmetic number, because the mean of its divisors is an integer number (35545554).

Almost surely, 2^142126559 is an apocalyptic number.

142126559 is a deficient number, since it is larger than the sum of its proper divisors (55657).

142126559 is an equidigital number, since it uses as much as digits as its factorization.

142126559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55656.

The product of its digits is 21600, while the sum is 35.

The square root of 142126559 is about 11921.6844028015. The cubic root of 142126559 is about 521.8652918892.

The spelling of 142126559 in words is "one hundred forty-two million, one hundred twenty-six thousand, five hundred fifty-nine".