142920101 has 2 divisors, whose sum is σ = 142920102. Its totient is φ = 142920100.

The previous prime is 142920079. The next prime is 142920119. The reversal of 142920101 is 101029241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135163876 + 7756225 = 11626^2 + 2785^2 .

It is an emirp because it is prime and its reverse (101029241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142920101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142920121) 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, 71460050 + 71460051.

It is an arithmetic number, because the mean of its divisors is an integer number (71460051).

Almost surely, 2^142920101 is an apocalyptic number.

It is an amenable number.

142920101 is a deficient number, since it is larger than the sum of its proper divisors (1).

142920101 is an equidigital number, since it uses as much as digits as its factorization.

142920101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 142920101 is about 11954.9195313059. The cubic root of 142920101 is about 522.8347416601.

Adding to 142920101 its reverse (101029241), we get a palindrome (243949342).

The spelling of 142920101 in words is "one hundred forty-two million, nine hundred twenty thousand, one hundred one".