144942691 has 2 divisors, whose sum is σ = 144942692. Its totient is φ = 144942690.

The previous prime is 144942673. The next prime is 144942713. The reversal of 144942691 is 196249441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144942691 - 2⁷ = 144942563 is a prime.

It is not a weakly prime, because it can be changed into another prime (144942631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72471345 + 72471346.

It is an arithmetic number, because the mean of its divisors is an integer number (72471346).

Almost surely, 2^144942691 is an apocalyptic number.

144942691 is a deficient number, since it is larger than the sum of its proper divisors (1).

144942691 is an equidigital number, since it uses as much as digits as its factorization.

144942691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 144942691 is about 12039.2147169157. The cubic root of 144942691 is about 525.2895648259.

The spelling of 144942691 in words is "one hundred forty-four million, nine hundred forty-two thousand, six hundred ninety-one".