142121027 has 2 divisors, whose sum is σ = 142121028. Its totient is φ = 142121026.

The previous prime is 142121017. The next prime is 142121051. The reversal of 142121027 is 720121241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142121027 - 2⁴ = 142121011 is a prime.

It is not a weakly prime, because it can be changed into another prime (142121017) 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, 71060513 + 71060514.

It is an arithmetic number, because the mean of its divisors is an integer number (71060514).

Almost surely, 2^142121027 is an apocalyptic number.

142121027 is a deficient number, since it is larger than the sum of its proper divisors (1).

142121027 is an equidigital number, since it uses as much as digits as its factorization.

142121027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 142121027 is about 11921.4523863496. The cubic root of 142121027 is about 521.8585209373.

Adding to 142121027 its reverse (720121241), we get a palindrome (862242268).

The spelling of 142121027 in words is "one hundred forty-two million, one hundred twenty-one thousand, twenty-seven".