142886449 has 2 divisors, whose sum is σ = 142886450. Its totient is φ = 142886448.

The previous prime is 142886437. The next prime is 142886453. The reversal of 142886449 is 944688241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98903025 + 43983424 = 9945^2 + 6632^2 .

It is a cyclic number.

It is not a de Polignac number, because 142886449 - 2¹⁹ = 142362161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142886399 and 142886408.

It is not a weakly prime, because it can be changed into another prime (142886459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71443224 + 71443225.

It is an arithmetic number, because the mean of its divisors is an integer number (71443225).

Almost surely, 2^142886449 is an apocalyptic number.

It is an amenable number.

142886449 is a deficient number, since it is larger than the sum of its proper divisors (1).

142886449 is an equidigital number, since it uses as much as digits as its factorization.

142886449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 46.

The square root of 142886449 is about 11953.5119943889. The cubic root of 142886449 is about 522.7937028426.

The spelling of 142886449 in words is "one hundred forty-two million, eight hundred eighty-six thousand, four hundred forty-nine".