143300421 has 30 divisors (see below), whose sum is σ = 235311846. Its totient is φ = 86842800.

The previous prime is 143300411. The next prime is 143300441. The reversal of 143300421 is 124003341.

It can be written as a sum of positive squares in only one way, i.e., 72488196 + 70812225 = 8514^2 + 8415^2 .

It is not a de Polignac number, because 143300421 - 2⁵ = 143300389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143300394 and 143300403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143300411) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2491 + ... + 17111.

Almost surely, 2^143300421 is an apocalyptic number.

143300421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143300421 is a deficient number, since it is larger than the sum of its proper divisors (92011425).

143300421 is a wasteful number, since it uses less digits than its factorization.

143300421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14655 (or 14635 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 143300421 is about 11970.8153857622. The cubic root of 143300421 is about 523.2980970321.

Adding to 143300421 its reverse (124003341), we get a palindrome (267303762).

The spelling of 143300421 in words is "one hundred forty-three million, three hundred thousand, four hundred twenty-one".