143242369 has 2 divisors, whose sum is σ = 143242370. Its totient is φ = 143242368.

The previous prime is 143242301. The next prime is 143242403. The reversal of 143242369 is 963242341.

It is a happy number.

It is an a-pointer prime, because the next prime (143242403) can be obtained adding 143242369 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136585969 + 6656400 = 11687^2 + 2580^2 .

It is an emirp because it is prime and its reverse (963242341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143242369 - 2²⁵ = 109687937 is a prime.

It is a super-2 number, since 2×143242369² = 41036752553464322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143242469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71621184 + 71621185.

It is an arithmetic number, because the mean of its divisors is an integer number (71621185).

Almost surely, 2^143242369 is an apocalyptic number.

It is an amenable number.

143242369 is a deficient number, since it is larger than the sum of its proper divisors (1).

143242369 is an equidigital number, since it uses as much as digits as its factorization.

143242369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 143242369 is about 11968.3904097418. The cubic root of 143242369 is about 523.2274235849.

The spelling of 143242369 in words is "one hundred forty-three million, two hundred forty-two thousand, three hundred sixty-nine".