143442220 has 24 divisors (see below), whose sum is σ = 304215408. Its totient is φ = 56808000.

The previous prime is 143442203. The next prime is 143442227. The reversal of 143442220 is 22244341.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 143442191 and 143442200.

It is not an unprimeable number, because it can be changed into a prime (143442227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33486 + ... + 37525.

It is an arithmetic number, because the mean of its divisors is an integer number (12675642).

Almost surely, 2^143442220 is an apocalyptic number.

143442220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143442220 is an abundant number, since it is smaller than the sum of its proper divisors (160773188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143442220 is a wasteful number, since it uses less digits than its factorization.

143442220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71121 (or 71119 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 143442220 is about 11976.7366172927. The cubic root of 143442220 is about 523.4706452227.

Adding to 143442220 its reverse (22244341), we get a palindrome (165686561).

The spelling of 143442220 in words is "one hundred forty-three million, four hundred forty-two thousand, two hundred twenty".