143402224 has 60 divisors (see below), whose sum is σ = 326584008. Its totient is φ = 60816000.

The previous prime is 143402221. The next prime is 143402243. The reversal of 143402224 is 422204341.

It is a happy number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 143402195 and 143402204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143402221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78279 + ... + 80089.

Almost surely, 2^143402224 is an apocalyptic number.

143402224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143402224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163292004).

143402224 is an abundant number, since it is smaller than the sum of its proper divisors (183181784).

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

143402224 is a wasteful number, since it uses less digits than its factorization.

143402224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1921 counting only the distinct ones).

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

The square root of 143402224 is about 11975.0667639057. The cubic root of 143402224 is about 523.4219875863.

Adding to 143402224 its reverse (422204341), we get a palindrome (565606565).

The spelling of 143402224 in words is "one hundred forty-three million, four hundred two thousand, two hundred twenty-four".