142446449 has 2 divisors, whose sum is σ = 142446450. Its totient is φ = 142446448.

The previous prime is 142446431. The next prime is 142446467. The reversal of 142446449 is 944644241.

It is a balanced prime because it is at equal distance from previous prime (142446431) and next prime (142446467).

It can be written as a sum of positive squares in only one way, i.e., 78446449 + 64000000 = 8857^2 + 8000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142446449 is a prime.

It is not a weakly prime, because it can be changed into another prime (142446749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71223224 + 71223225.

It is an arithmetic number, because the mean of its divisors is an integer number (71223225).

Almost surely, 2^142446449 is an apocalyptic number.

It is an amenable number.

142446449 is a deficient number, since it is larger than the sum of its proper divisors (1).

142446449 is an equidigital number, since it uses as much as digits as its factorization.

142446449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 38.

The square root of 142446449 is about 11935.0931709811. The cubic root of 142446449 is about 522.2565262931.

The spelling of 142446449 in words is "one hundred forty-two million, four hundred forty-six thousand, four hundred forty-nine".