143422645 has 4 divisors (see below), whose sum is σ = 172107180.
Its totient is φ = 114738112.
The previous prime is 143422639. The next prime is 143422663. The reversal of 143422645 is 546224341.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546224341 = 13 ⋅42017257.
It can be written as a sum of positive squares in 2 ways, for example, as 38031889 + 105390756 = 6167^2 + 10266^2
It is a cyclic number.
It is not a de Polignac number, because 143422645 - 215 = 143389877 is a prime.
It is a congruent number.
It is an unprimeable number.
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 in 3 ways as a sum of consecutive naturals, for example, 14342260 + ... + 14342269.
It is an arithmetic number, because the mean of its divisors is an integer number (43026795).
Almost surely, 2143422645 is an apocalyptic number.
It is an amenable number.
143422645 is a deficient number, since it is larger than the sum of its proper divisors (28684535).
143422645 is an equidigital number, since it uses as much as digits as its factorization.
143422645 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 28684534.
The product of its digits is 23040, while the sum is 31.
The square root of 143422645 is about 11975.9193801562.
The cubic root of 143422645 is about 523.4468321407.
Adding to 143422645 its reverse (546224341), we get a palindrome (689646986).
The spelling of 143422645 in words is "one hundred forty-three million, four hundred twenty-two thousand, six hundred forty-five".