142444249 has 2 divisors, whose sum is σ = 142444250. Its totient is φ = 142444248.

The previous prime is 142444213. The next prime is 142444277. The reversal of 142444249 is 942444241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79923600 + 62520649 = 8940^2 + 7907^2 .

It is a cyclic number.

It is not a de Polignac number, because 142444249 - 2²³ = 134055641 is a prime.

It is not a weakly prime, because it can be changed into another prime (142444279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71222124 + 71222125.

It is an arithmetic number, because the mean of its divisors is an integer number (71222125).

Almost surely, 2^142444249 is an apocalyptic number.

It is an amenable number.

142444249 is a deficient number, since it is larger than the sum of its proper divisors (1).

142444249 is an equidigital number, since it uses as much as digits as its factorization.

142444249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 34.

The square root of 142444249 is about 11935.0010054461. The cubic root of 142444249 is about 522.2538376329.

The spelling of 142444249 in words is "one hundred forty-two million, four hundred forty-four thousand, two hundred forty-nine".