142243349 has 2 divisors, whose sum is σ = 142243350. Its totient is φ = 142243348.

The previous prime is 142243333. The next prime is 142243363. The reversal of 142243349 is 943342241.

142243349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132664324 + 9579025 = 11518^2 + 3095^2 .

It is a cyclic number.

It is not a de Polignac number, because 142243349 - 2⁴ = 142243333 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 (142243379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121674 + 71121675.

It is an arithmetic number, because the mean of its divisors is an integer number (71121675).

Almost surely, 2^142243349 is an apocalyptic number.

It is an amenable number.

142243349 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243349 is an equidigital number, since it uses as much as digits as its factorization.

142243349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 32.

The square root of 142243349 is about 11926.5816141927. The cubic root of 142243349 is about 522.0081972945.

The spelling of 142243349 in words is "one hundred forty-two million, two hundred forty-three thousand, three hundred forty-nine".