143222449 has 32 divisors (see below), whose sum is σ = 162846720. Its totient is φ = 125452800.

The previous prime is 143222413. The next prime is 143222473. The reversal of 143222449 is 944222341.

It is a cyclic number.

It is not a de Polignac number, because 143222449 - 2⁹ = 143221937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 143222449.

It is not an unprimeable number, because it can be changed into a prime (143222479) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1609197 + ... + 1609285.

It is an arithmetic number, because the mean of its divisors is an integer number (5088960).

Almost surely, 2^143222449 is an apocalyptic number.

It is an amenable number.

143222449 is a deficient number, since it is larger than the sum of its proper divisors (19624271).

143222449 is a wasteful number, since it uses less digits than its factorization.

143222449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241.

The product of its digits is 13824, while the sum is 31.

The square root of 143222449 is about 11967.5581887033. The cubic root of 143222449 is about 523.2031682533.

The spelling of 143222449 in words is "one hundred forty-three million, two hundred twenty-two thousand, four hundred forty-nine".