143421100 has 72 divisors (see below), whose sum is σ = 327979008. Its totient is φ = 54331200.

The previous prime is 143421079. The next prime is 143421119. The reversal of 143421100 is 1124341.

It is a super-2 number, since 2×143421100² = 41139223850420000, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 291855 + ... + 292345.

It is an arithmetic number, because the mean of its divisors is an integer number (4555264).

Almost surely, 2^143421100 is an apocalyptic number.

143421100 is a gapful number since it is divisible by the number (10) 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 143421100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163989504).

143421100 is an abundant number, since it is smaller than the sum of its proper divisors (184557908).

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

143421100 is a wasteful number, since it uses less digits than its factorization.

143421100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 143421100 is about 11975.8548755402. The cubic root of 143421100 is about 523.4449525485. Note that the first 3 decimals are identical.

Adding to 143421100 its reverse (1124341), we get a palindrome (144545441).

The spelling of 143421100 in words is "one hundred forty-three million, four hundred twenty-one thousand, one hundred".