142127745 has 16 divisors (see below), whose sum is σ = 227610432. Its totient is φ = 75732800.

The previous prime is 142127737. The next prime is 142127747. The reversal of 142127745 is 547721241.

It is not a de Polignac number, because 142127745 - 2³ = 142127737 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142127747) 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 in 15 ways as a sum of consecutive naturals, for example, 15874 + ... + 23156.

It is an arithmetic number, because the mean of its divisors is an integer number (14225652).

Almost surely, 2^142127745 is an apocalyptic number.

142127745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142127745 is a deficient number, since it is larger than the sum of its proper divisors (85482687).

142127745 is a wasteful number, since it uses less digits than its factorization.

142127745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8592.

The product of its digits is 15680, while the sum is 33.

The square root of 142127745 is about 11921.7341439910. The cubic root of 142127745 is about 521.8667434839.

Adding to 142127745 its reverse (547721241), we get a palindrome (689848986).

The spelling of 142127745 in words is "one hundred forty-two million, one hundred twenty-seven thousand, seven hundred forty-five".