101142049 has 2 divisors, whose sum is σ = 101142050. Its totient is φ = 101142048.

The previous prime is 101142043. The next prime is 101142077. The reversal of 101142049 is 940241101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99201600 + 1940449 = 9960^2 + 1393^2 .

It is a cyclic number.

It is not a de Polignac number, because 101142049 - 2¹⁷ = 101010977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101142043) 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, 50571024 + 50571025.

It is an arithmetic number, because the mean of its divisors is an integer number (50571025).

Almost surely, 2^101142049 is an apocalyptic number.

It is an amenable number.

101142049 is a deficient number, since it is larger than the sum of its proper divisors (1).

101142049 is an equidigital number, since it uses as much as digits as its factorization.

101142049 is an odious number, because the sum of its binary digits is odd.

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

The square root of 101142049 is about 10056.9403398847. The cubic root of 101142049 is about 465.9191731097.

The spelling of 101142049 in words is "one hundred one million, one hundred forty-two thousand, forty-nine".