143420422 has 16 divisors (see below), whose sum is σ = 216691200. Its totient is φ = 71192520.

The previous prime is 143420383. The next prime is 143420429. The reversal of 143420422 is 224024341.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 143420393 and 143420402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143420429) 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, 326479 + ... + 326917.

It is an arithmetic number, because the mean of its divisors is an integer number (13543200).

Almost surely, 2^143420422 is an apocalyptic number.

143420422 is a deficient number, since it is larger than the sum of its proper divisors (73270778).

143420422 is a wasteful number, since it uses less digits than its factorization.

143420422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251.

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

The square root of 143420422 is about 11975.8265685505. The cubic root of 143420422 is about 523.4441277135. Note that the first 3 decimals are identical.

Adding to 143420422 its reverse (224024341), we get a palindrome (367444763).

The spelling of 143420422 in words is "one hundred forty-three million, four hundred twenty thousand, four hundred twenty-two".