100142149 has 2 divisors, whose sum is σ = 100142150. Its totient is φ = 100142148.

The previous prime is 100142129. The next prime is 100142197. The reversal of 100142149 is 941241001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52780225 + 47361924 = 7265^2 + 6882^2 .

It is an emirp because it is prime and its reverse (941241001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100142149 - 2⁵ = 100142117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100142129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50071074 + 50071075.

It is an arithmetic number, because the mean of its divisors is an integer number (50071075).

Almost surely, 2^100142149 is an apocalyptic number.

It is an amenable number.

100142149 is a deficient number, since it is larger than the sum of its proper divisors (1).

100142149 is an equidigital number, since it uses as much as digits as its factorization.

100142149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 100142149 is about 10007.1049260013. The cubic root of 100142149 is about 464.3787116366.

The spelling of 100142149 in words is "one hundred million, one hundred forty-two thousand, one hundred forty-nine".