142253549 has 2 divisors, whose sum is σ = 142253550. Its totient is φ = 142253548.

The previous prime is 142253533. The next prime is 142253557. The reversal of 142253549 is 945352241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89908324 + 52345225 = 9482^2 + 7235^2 .

It is a cyclic number.

It is not a de Polignac number, because 142253549 - 2⁴ = 142253533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142253519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71126774 + 71126775.

It is an arithmetic number, because the mean of its divisors is an integer number (71126775).

Almost surely, 2^142253549 is an apocalyptic number.

It is an amenable number.

142253549 is a deficient number, since it is larger than the sum of its proper divisors (1).

142253549 is an equidigital number, since it uses as much as digits as its factorization.

142253549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 142253549 is about 11927.0092227683. The cubic root of 142253549 is about 522.0206744012.

The spelling of 142253549 in words is "one hundred forty-two million, two hundred fifty-three thousand, five hundred forty-nine".