142449173 has 2 divisors, whose sum is σ = 142449174. Its totient is φ = 142449172.

The previous prime is 142449161. The next prime is 142449227. The reversal of 142449173 is 371944241.

It is a happy number.

142449173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92294449 + 50154724 = 9607^2 + 7082^2 .

It is a cyclic number.

It is not a de Polignac number, because 142449173 - 2¹⁴ = 142432789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142449133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71224586 + 71224587.

It is an arithmetic number, because the mean of its divisors is an integer number (71224587).

Almost surely, 2^142449173 is an apocalyptic number.

It is an amenable number.

142449173 is a deficient number, since it is larger than the sum of its proper divisors (1).

142449173 is an equidigital number, since it uses as much as digits as its factorization.

142449173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 142449173 is about 11935.2072876846. The cubic root of 142449173 is about 522.2598553048.

The spelling of 142449173 in words is "one hundred forty-two million, four hundred forty-nine thousand, one hundred seventy-three".