144142399 has 2 divisors, whose sum is σ = 144142400. Its totient is φ = 144142398.

The previous prime is 144142391. The next prime is 144142409. The reversal of 144142399 is 993241441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144142399 - 2³ = 144142391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144142391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72071199 + 72071200.

It is an arithmetic number, because the mean of its divisors is an integer number (72071200).

Almost surely, 2^144142399 is an apocalyptic number.

144142399 is a deficient number, since it is larger than the sum of its proper divisors (1).

144142399 is an equidigital number, since it uses as much as digits as its factorization.

144142399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 144142399 is about 12005.9318255602. The cubic root of 144142399 is about 524.3209955119.

The spelling of 144142399 in words is "one hundred forty-four million, one hundred forty-two thousand, three hundred ninety-nine".